Recently having had a sore throat or tonsillitis - when it is caused by our normally throat and nose inhabiting (commensal) strep bacteria- is the only way you can get Rheumatic Fever.
There has never been a confirmed incident when huge life-threatening amounts of virulent strep bacteria rolling about in a gaping wound (the type of dramatic situation that makes strep the most feared word in the medical lexicon) has ever caused a single case of life-threatening Rheumatic Fever.
Rheumatic Fever (RF) is (and was) a very serious and very common disease, yet it begins with the quietest possible onset - one third of all its victims can't even remember having had a recent sore throat.
'Sore throat', undefined, is so common throughout all our lives, that we find it hard to tell those ones that were caused by strep bacteria from those that weren't.
The safest rule is if the sore throat hurts much and hangs on more than a day or two - run to a doctor and ask for a swab test.
If we are very unwell and have had endless rounds of sore throats and even previous bouts of RF, probably almost any strain of strep can cause another round of RF.
But for most of us that are healthy and well fed, being in an stressful new situation in an enclosed space for weeks at a time with a particularly virulent strain of strep running from person to person back to person, is our only way to get it.
I mean a wartime military recruit camp - the best possible natural laboratory we have ever had to see just how many people can get RF if the conditions are perfect.
The observed percentages are high enough, often enough, to put real fear into that doctors that do statistics and are paid to keep an eye on epidemics ---this despite the fact that RF is almost totally gone in the western world.
(It is still common in third world countries that until fairly recently historically never saw a case of it.)
We still don't know enough about it, to be terribly confident that it will remain beaten here in the western world.
Currently, the biggest focus of research effort is something that Martin Henry Dawson would not have found surprising : it is the fact that it is the most heavily mucoid of hemo strep colonies that seem to cause RF among populations normally felt to be at least risk.
Mucoid heavy strains of hemo strep turn RF from a social disease affecting the poor mostly, to something that could kill any or all of us.
A deep interest in raising the awareness of the virulence of Mucoid colonies of GAS strep generally (along with his pioneer use of penicillin to cure RF's final effect, SBE) was Dawson's particular contribution to the world wide effort to explain and prevent RF from the 1920s to the 1960s.
I do not believe that Dawson had actually pinpointed mucoid strains of hemolytic strep as the leading agents of the most deadly versions of RF - he simply knew that mucoid colonies were usually the most deadly agents in all of the dozens of serious diseases that strep deals out to us humans - and in the 1930s, RF was the most important hemo strep disease around.
Having his thesis proven in the case of acute RF wouldn't have surprised Dawson - but it would have pleased him.
His 1930s mucoid work, sandwiched as it was between his pioneering work on recombinant DNA in the 1920s and his pioneering penicillin work in the 1940s has naturally been overshadowed by these two, the two biggest medical stories of the entire 20th century and beyond.
But to explain how in 1940 that an arthritis 'aspirin doctor' ended up in the area of endocarditis, today the domain of heart surgeons, we need to see this intellectual connection between mucoid hemo strep causing RF, which in turn led to SBE.......
Tuesday, October 12, 2010
Friday, October 8, 2010
Sir Robertson's curious letter and curiouser claim
Late August and early September 1942 saw a furious burst of letters to the editor directed at The Times of London, provoked by an August 27th editorial in paper concerning penicillin.
The three hundred word effort echoed an earlier editorial from The Lancet , and supported their claim that the drug was non toxic and more active than sulfa drugs and that its production should be greatly expanded and quickly.
Since penicillin looked to be a real comer with much 'moral capital' accruing to the companies or institutions that best claimed the laurels for first developing it, naturally all the major bodies involved had to elbow their way forward to stake their claim - the current 'all-for-one' war effort not withstanding.
(A note to errant historians and authors: the drug companies' penicillin research arm, the TRC,were actually the first to gave themselves credit. Only then did St Mary's Hospital step in to also seek some glory.)
Sir Robert Robertson, the world famous Oxford chemist , spoke for the Oxford team.
Some of what he claimed were mere weasel words.
Dawson published the results of his treatment of 12 patients by May 1941, Florey his results on ten patients in August 1941.
Both were admirably cautious in assessing what if anything penicillin had done for their patients.
Dawson was actually the first to treat a patient and see that patient go home from his deathbed --- so Robertson was content to use weasel words that Florey was the first to "demonstrate the value
(of penicillin) clinically."
'Demonstrate' is a subjective term - in the eyes of the beholder - and Robertson knew it.
So, he had as well admitted that Fleming discovered penicillin and that Dawson had been the first to use it clinically as a life-saving systemic antibiotic.
What credit left for Oxford?
Robertson then told the bare-faced lie that toxic materials were produced by the penicillium mold, along with penicillin.
Florey was therefore to be praised for being the first to separate the unsafe impurities from the safe pure penicillin so that it could be at last safely used on humans. (But wasn't, not by Florey - at least not right away ...!)
Nobody who ever worked with penicillin-producing penicillium , starting with Fleming in 1928 and carrying right on through twenty years later, ever saw enough of anything harmful, at levels enough to be toxic.
All made a point to note that the raw penicillin juice was not toxic even when injected in huge quantities by normal medical standards.
Foremost among these supporters of the use of semi-purified or raw penicillin was one Howard Florey.
He publicly marveled that in hundreds of IM injections, no damage was ever seen at the site of the needle - not even in babies. The impure preparations he rated at 10% pure at the max (actually 3% pure) yet their impurities ( 97% of the dose) were non toxic - even when given in huge dosages.
It is hard to imagine a better test for proving the impurities were NOT toxic --- I can not,myself, imagine one.
What was going on then - in the mind of Professor Robertson and his chemist-manque Dr Florey ?
If Robertson and Florey had made any headway on synthesizing penicillin, I am sure this would have been their sole claim to glory.
But they hadn't.
So what can chemists do?
They can separate substances, even if they can't synthesize them, and even if the substances didn't need separating !
A nice meal does not improve when a chemist burns it all and then pours acid over the remains, to separate it into its constitute elements.
Penicillin juice - as Australian Dr James Vincent Duhig demonstrated in Brisbane in the Fall of 1943, doesn't need to be separated from its impurities at all, in order to save lives safely.
When it comes to questions of health, trust Duhig,MD over chemist Robertson PhD.
I don't expect Oxford University's academics to ever set the scholastic record straight about what Oxford did and didn't do with penicillin.
Claiming a leading role in developing the best lifesaver the world will ever know is simply too much of a money spinner for Oxford and the entire Thames Valley community.....
The three hundred word effort echoed an earlier editorial from The Lancet , and supported their claim that the drug was non toxic and more active than sulfa drugs and that its production should be greatly expanded and quickly.
Since penicillin looked to be a real comer with much 'moral capital' accruing to the companies or institutions that best claimed the laurels for first developing it, naturally all the major bodies involved had to elbow their way forward to stake their claim - the current 'all-for-one' war effort not withstanding.
(A note to errant historians and authors: the drug companies' penicillin research arm, the TRC,were actually the first to gave themselves credit. Only then did St Mary's Hospital step in to also seek some glory.)
Sir Robert Robertson, the world famous Oxford chemist , spoke for the Oxford team.
Some of what he claimed were mere weasel words.
Dawson published the results of his treatment of 12 patients by May 1941, Florey his results on ten patients in August 1941.
Both were admirably cautious in assessing what if anything penicillin had done for their patients.
Dawson was actually the first to treat a patient and see that patient go home from his deathbed --- so Robertson was content to use weasel words that Florey was the first to "demonstrate the value
(of penicillin) clinically."
'Demonstrate' is a subjective term - in the eyes of the beholder - and Robertson knew it.
So, he had as well admitted that Fleming discovered penicillin and that Dawson had been the first to use it clinically as a life-saving systemic antibiotic.
What credit left for Oxford?
Robertson then told the bare-faced lie that toxic materials were produced by the penicillium mold, along with penicillin.
Florey was therefore to be praised for being the first to separate the unsafe impurities from the safe pure penicillin so that it could be at last safely used on humans. (But wasn't, not by Florey - at least not right away ...!)
Nobody who ever worked with penicillin-producing penicillium , starting with Fleming in 1928 and carrying right on through twenty years later, ever saw enough of anything harmful, at levels enough to be toxic.
All made a point to note that the raw penicillin juice was not toxic even when injected in huge quantities by normal medical standards.
Foremost among these supporters of the use of semi-purified or raw penicillin was one Howard Florey.
He publicly marveled that in hundreds of IM injections, no damage was ever seen at the site of the needle - not even in babies. The impure preparations he rated at 10% pure at the max (actually 3% pure) yet their impurities ( 97% of the dose) were non toxic - even when given in huge dosages.
It is hard to imagine a better test for proving the impurities were NOT toxic --- I can not,myself, imagine one.
What was going on then - in the mind of Professor Robertson and his chemist-manque Dr Florey ?
If Robertson and Florey had made any headway on synthesizing penicillin, I am sure this would have been their sole claim to glory.
But they hadn't.
So what can chemists do?
They can separate substances, even if they can't synthesize them, and even if the substances didn't need separating !
A nice meal does not improve when a chemist burns it all and then pours acid over the remains, to separate it into its constitute elements.
Penicillin juice - as Australian Dr James Vincent Duhig demonstrated in Brisbane in the Fall of 1943, doesn't need to be separated from its impurities at all, in order to save lives safely.
When it comes to questions of health, trust Duhig,MD over chemist Robertson PhD.
I don't expect Oxford University's academics to ever set the scholastic record straight about what Oxford did and didn't do with penicillin.
Claiming a leading role in developing the best lifesaver the world will ever know is simply too much of a money spinner for Oxford and the entire Thames Valley community.....
CRITICAL biography of Norman Heatley long, long overdue
I don't think Norman Heatley (1911-2004) did as much to advance penicillin as he thought he did.
I think a more balanced collective biography of the entire Oxford team might better spread the credit (and blame) about.
It seems to me that Glister and Sanders did far more, and Heatley far less ,to get penicillin production actually working and producing.
Norman himself conveyed to the world his view that he felt he was no longer a key member of the Oxford penicillin team after 1943 - as the historical blue plaque on his home so indicates.
(He even tried to apply for a job at a drug firm far far from the Dunn in 1944 !)
The Oxford team kept up their penicillin work up to the war's end in 1945 and beyond -I am curious to know what it was that Heatley felt he was doing at the Dunn between 1943 and 1946, if it didn't involve penicillin.
Sanders and Glister and all the rest - except Florey and Heatley -were never very interested to tell their part in the penicillin saga at Oxford.
So in this land of the blind, the one-eyed Heatley became king - particularly in the 36 years after Florey's death.
Heatley grew ever bolder in his claims ,as more and more of
'the old gang' passed on beyond the point of rebuttals via 'letters to the editor', directed at The Times.
The Oxford community, still unable to understand how credit for penicillin was taken up by a Scotsman (Alexander Fleming) and a parvenu American soda pop company (Pfizer), fully supported Heatley in this effort.
I don't expect my biography of another penicillin pioneer, close associate of Pfizer, and a Scotman, Martin Henry Dawson, to be any more popular in Oxford.....
I think a more balanced collective biography of the entire Oxford team might better spread the credit (and blame) about.
It seems to me that Glister and Sanders did far more, and Heatley far less ,to get penicillin production actually working and producing.
Norman himself conveyed to the world his view that he felt he was no longer a key member of the Oxford penicillin team after 1943 - as the historical blue plaque on his home so indicates.
(He even tried to apply for a job at a drug firm far far from the Dunn in 1944 !)
The Oxford team kept up their penicillin work up to the war's end in 1945 and beyond -I am curious to know what it was that Heatley felt he was doing at the Dunn between 1943 and 1946, if it didn't involve penicillin.
Sanders and Glister and all the rest - except Florey and Heatley -were never very interested to tell their part in the penicillin saga at Oxford.
So in this land of the blind, the one-eyed Heatley became king - particularly in the 36 years after Florey's death.
Heatley grew ever bolder in his claims ,as more and more of
'the old gang' passed on beyond the point of rebuttals via 'letters to the editor', directed at The Times.
The Oxford community, still unable to understand how credit for penicillin was taken up by a Scotsman (Alexander Fleming) and a parvenu American soda pop company (Pfizer), fully supported Heatley in this effort.
I don't expect my biography of another penicillin pioneer, close associate of Pfizer, and a Scotman, Martin Henry Dawson, to be any more popular in Oxford.....
Thursday, October 7, 2010
it was the patients' MOMS who brought penicillin to the DOCTORS
The private discovery of penicillin happened in September 1928, the public discovery in June 1929 when it was published in an important, peer-reviewed scientific journal.
But then it just sat there for twelve to fifteen years.
So your great grandfather or great aunt died needlessly because the doctors and the scientists did nothing with penicillin, after that public discovery.
In August and September 1943, however, your grandmother "popularly" discovered penicillin when she read about Baby Patricia in some newspaper articles in some of the Hearst publications.
Now the fur really flew, as your grandmother demanded to know why your uncle, off wounded in a hospital in the South Pacific, wasn't getting any of this penicillin.
Her Mom-like anger and urgency finally got the men moving and before long her doctor and every other doctor had penicillin to treat patients.
So don't go tell me that doctors bring penicillin to patients.
Publication in a scientific journal (aka making something public as the scientists say) is not the be all and end all of effective science, as satisfying as it is to scientific egos.
The most influential scientific publication of Doctor Martin Henry Dawson was an oral, not printed, account of the first human cases ever treated with systemic penicillin, given at an Annual Meeting of the Society of Clinical Investigators in May 1941 in front of hundreds of the world's leading medical scientists from all over the world.
Did he publicize his work with penicillin ? We laypeople might think so.
Howard Florey, however, sensed a loophole.
He chose to regard an oral presentation of a paper at an conference, and subsequently published on paper in July 1941, as 'not a scientific publication' and ignored all mention of Dawson's breakthrough in his own references to his subsequent August 1941 paper on penicillin.
Thankfully, Dawson's work got written up in the New York Times ---near the business section --- not a scientific publication, admittedly.
However when the people in charge of the chequebook at Pfizer read it, they saw to it that their Brooklyn Crude penicillin was there to save the wounded on the D-Day beaches and ever after, until the war's end.
Florey continued to publish scientifically on his synthetic penicillin (Oxford Pure)---- but he never actually delivered any.
Pfizer never did publish on its safe, effective Brooklyn Crude.
They just delivered to the beaches, on time, and in quantity.
If you were a soldier in the Princess Louise Regiment (PLF) regiment lying on the Gothic Line, wounded, which would you prefer: British published talk or unpublished American walk ?
Well I was a (post war) member of the PLF and I bloody well know which one I'd prefer.
"OXFORD talks, but BROOKLYN walks..."
But then it just sat there for twelve to fifteen years.
So your great grandfather or great aunt died needlessly because the doctors and the scientists did nothing with penicillin, after that public discovery.
In August and September 1943, however, your grandmother "popularly" discovered penicillin when she read about Baby Patricia in some newspaper articles in some of the Hearst publications.
Now the fur really flew, as your grandmother demanded to know why your uncle, off wounded in a hospital in the South Pacific, wasn't getting any of this penicillin.
Her Mom-like anger and urgency finally got the men moving and before long her doctor and every other doctor had penicillin to treat patients.
So don't go tell me that doctors bring penicillin to patients.
Publication in a scientific journal (aka making something public as the scientists say) is not the be all and end all of effective science, as satisfying as it is to scientific egos.
The most influential scientific publication of Doctor Martin Henry Dawson was an oral, not printed, account of the first human cases ever treated with systemic penicillin, given at an Annual Meeting of the Society of Clinical Investigators in May 1941 in front of hundreds of the world's leading medical scientists from all over the world.
Did he publicize his work with penicillin ? We laypeople might think so.
Howard Florey, however, sensed a loophole.
He chose to regard an oral presentation of a paper at an conference, and subsequently published on paper in July 1941, as 'not a scientific publication' and ignored all mention of Dawson's breakthrough in his own references to his subsequent August 1941 paper on penicillin.
Thankfully, Dawson's work got written up in the New York Times ---near the business section --- not a scientific publication, admittedly.
However when the people in charge of the chequebook at Pfizer read it, they saw to it that their Brooklyn Crude penicillin was there to save the wounded on the D-Day beaches and ever after, until the war's end.
Florey continued to publish scientifically on his synthetic penicillin (Oxford Pure)---- but he never actually delivered any.
Pfizer never did publish on its safe, effective Brooklyn Crude.
They just delivered to the beaches, on time, and in quantity.
If you were a soldier in the Princess Louise Regiment (PLF) regiment lying on the Gothic Line, wounded, which would you prefer: British published talk or unpublished American walk ?
Well I was a (post war) member of the PLF and I bloody well know which one I'd prefer.
"OXFORD talks, but BROOKLYN walks..."
Tuesday, October 5, 2010
Oct 16 1940 : the disease was MODERNITY
A marvellously effective drug lay on a British shelf, unused, for twelve long years --- 'a miracle cure in search of a disease' --- on October 16th 1940 in a Manhattan hospital it finally found it : the disease was MODERNITY and the cure was penicillin.
The nominal disease Dr Martin Henry Dawson was seeking to cure that day (almost exactly 70 years ago) with the first ever needleful of the antibiotic penicillin was SBE, an invariably fatal calcination of the heart valves.
However the real disease he was seeking to heal was modern utilitarianism, aka stone-heartedness.
Neither Fleming or Florey - to put it mildly - were up for this job.
In a few weeks,Dawson discovered he himself was dying as well but he felt duty-bound to carry on helping the helpless and the hopeless, despite a 'Total War' atmosphere which assigned 'useless mouths' like the SBEs to baneful neglect --- or worse.
The nominal disease Dr Martin Henry Dawson was seeking to cure that day (almost exactly 70 years ago) with the first ever needleful of the antibiotic penicillin was SBE, an invariably fatal calcination of the heart valves.
However the real disease he was seeking to heal was modern utilitarianism, aka stone-heartedness.
Neither Fleming or Florey - to put it mildly - were up for this job.
In a few weeks,Dawson discovered he himself was dying as well but he felt duty-bound to carry on helping the helpless and the hopeless, despite a 'Total War' atmosphere which assigned 'useless mouths' like the SBEs to baneful neglect --- or worse.
Sunday, October 3, 2010
Dying Doctor goes 'Over the Top' in WWII to save his patients
This is the plot of "MO goes PO" in "Hollywood High Concept", with the movie retitled as
"Penicillin Stat! : Dying Doctor goes 'Over the Top' in WWII to save his Patients."
As his skeptical medical critics saw the situation , Henry Dawson went completely 'Over the Top' in 1940, in his quest to save terminally ill SBE patients with his penicillium juice.
But then he had gone already 'Over the Top' in 1917 - and again in 1918 (while, by contrast, they had sat out the war ambitiously pushing ahead amid the deleted numbers of wartime grad school) so I suppose he earned the right to do the same in WWII.....
"Penicillin Stat! : Dying Doctor goes 'Over the Top' in WWII to save his Patients."
As his skeptical medical critics saw the situation , Henry Dawson went completely 'Over the Top' in 1940, in his quest to save terminally ill SBE patients with his penicillium juice.
But then he had gone already 'Over the Top' in 1917 - and again in 1918 (while, by contrast, they had sat out the war ambitiously pushing ahead amid the deleted numbers of wartime grad school) so I suppose he earned the right to do the same in WWII.....
Friday, October 1, 2010
Florey: if patents fail, try trademarks
By March 1941, Howard Florey ( the son of an industrialist who made his fortune through his knowledge of patents, trade secrets and trademarks ,as both a buyer and a seller ) knew that no drug firm was likely to take out a license on his penicillin purification process, even if he did get Oxford University or the MRC to patent it.
Taking it as a given that no one applies for a patent for a process that does not work at all, the usual delay and expense is over determining whether the process is truly novel.
The question as to whether it is truly commercial is left to the market.
A process that costs more to yield less product than an existing process, is not going to find any licensees even if the fees were pennies per annum.
Pfizer had citric acid, Florey had COKE
But Florey had basically kept his (highly inefficient) process highly secret - and an inefficient process that remains a trade secret, combined with a lot of chutzpah and legwork, can still make for a perfectly viable and profitable trade mark.
You simply claim that your product is superior than anyone else's because of your secret formula ,kept in a bank vault, ( Coke anyone?) and so is worth a superior price.
You simply substitute the power of saturation advertising when saturation catalyst chemistry fails to produce the expected yield.
This is what Florey commenced to do on his trip to America - insist that only Oxford University brand penicillin was the one and only true penicillin - just as the world had gotten used to being told that Oxford had the only real English bible and the only real English dictionary and the only real English accent.
I couldn't see this going down a ton in Plymouth,UK, a Royalist stronghold in the (English) Civil War, but at Yale and Harvard USA where the American rebels had fought and won a revolution against Oxford imposing its religious and cultural values on other faiths, this sort of stuff was a big hit.
I am sorry to say this - but when it comes to truly sucking up to any and every aristocrat - our American friends are suckers of the first water.
The chimera of penicillin
'Penicillin' doesn't actually exist - at least not as a single entity : rather it is the overall name for a large sub family of an even bigger family of antibiotics called the beta-lactams.
Almost all of these penicillins are defined as being hydrophobic (ie having non-polar side chains) antibiotics produced by fungi ,not bacteria ,that act mostly on gram positive bacteria and contain at their core the vital beta-lactam structure.
Reverse most of this, but leave the beta-lactam core and you have the cephalosporins antibiotic sub family.
Florey would rant at anyone who produced different results (like his long suffering friends at Merck) that their penicillin couldn't possibly be the real penicillin if it wasn't like his.
But it could be and was - different food mediums and conditions produced different types of beta-lactams and also differing amounts of antiobiotics that were not beta-lactams, from the same strain of penicillium.
In addition the penicillium frequently and rapidly mutated into different strains that could produce differing amounts of different penicillins in response to a fixed /standard set of conditions and food mediums.
Aaaaarrrgh !!!!!
In real life, outside the lab, reality was often as messy and untidy as real Australia was from its citizens' visions of a pure white only Australia.
Florey was a purity-wonk
Unfortunately, unlike his pragmatic Dad, Florey's main motif throughout his life was to seek out purity in all its forms - moral as well as chemical - we see this repeatedly referenced in his letters to his future wife Ethel from the 1920s.
I think Florey's barnstorming of America worked - he couldn't claim he had been the first in anything important in penicillin beyond the mouse test - Fleming, Paine and Dawson saw to that - but he could at least claim he had the purest penicillin on Earth.
To save lives, penicillin dose size, not quality, matters more...
I'll say it again - pure is a relative term, a percentage term - bacteria die and people's lives are saved only by large absolute amounts of penicillin - regardless of their relative purity.
Florey's all out pursuit of purity quality over penicillin quantity was a moral failing of the highest possible order.
In the war against Hitler and his racist purity views, to work full out, from 1938 to 1945, on finding an all-white penicillin was as obscene as as seeking to preserve an all-white Australia --- or an all-white Germany......
Taking it as a given that no one applies for a patent for a process that does not work at all, the usual delay and expense is over determining whether the process is truly novel.
The question as to whether it is truly commercial is left to the market.
A process that costs more to yield less product than an existing process, is not going to find any licensees even if the fees were pennies per annum.
Pfizer had citric acid, Florey had COKE
But Florey had basically kept his (highly inefficient) process highly secret - and an inefficient process that remains a trade secret, combined with a lot of chutzpah and legwork, can still make for a perfectly viable and profitable trade mark.
You simply claim that your product is superior than anyone else's because of your secret formula ,kept in a bank vault, ( Coke anyone?) and so is worth a superior price.
You simply substitute the power of saturation advertising when saturation catalyst chemistry fails to produce the expected yield.
This is what Florey commenced to do on his trip to America - insist that only Oxford University brand penicillin was the one and only true penicillin - just as the world had gotten used to being told that Oxford had the only real English bible and the only real English dictionary and the only real English accent.
I couldn't see this going down a ton in Plymouth,UK, a Royalist stronghold in the (English) Civil War, but at Yale and Harvard USA where the American rebels had fought and won a revolution against Oxford imposing its religious and cultural values on other faiths, this sort of stuff was a big hit.
I am sorry to say this - but when it comes to truly sucking up to any and every aristocrat - our American friends are suckers of the first water.
The chimera of penicillin
'Penicillin' doesn't actually exist - at least not as a single entity : rather it is the overall name for a large sub family of an even bigger family of antibiotics called the beta-lactams.
Almost all of these penicillins are defined as being hydrophobic (ie having non-polar side chains) antibiotics produced by fungi ,not bacteria ,that act mostly on gram positive bacteria and contain at their core the vital beta-lactam structure.
Reverse most of this, but leave the beta-lactam core and you have the cephalosporins antibiotic sub family.
Florey would rant at anyone who produced different results (like his long suffering friends at Merck) that their penicillin couldn't possibly be the real penicillin if it wasn't like his.
But it could be and was - different food mediums and conditions produced different types of beta-lactams and also differing amounts of antiobiotics that were not beta-lactams, from the same strain of penicillium.
In addition the penicillium frequently and rapidly mutated into different strains that could produce differing amounts of different penicillins in response to a fixed /standard set of conditions and food mediums.
Aaaaarrrgh !!!!!
In real life, outside the lab, reality was often as messy and untidy as real Australia was from its citizens' visions of a pure white only Australia.
Florey was a purity-wonk
Unfortunately, unlike his pragmatic Dad, Florey's main motif throughout his life was to seek out purity in all its forms - moral as well as chemical - we see this repeatedly referenced in his letters to his future wife Ethel from the 1920s.
I think Florey's barnstorming of America worked - he couldn't claim he had been the first in anything important in penicillin beyond the mouse test - Fleming, Paine and Dawson saw to that - but he could at least claim he had the purest penicillin on Earth.
To save lives, penicillin dose size, not quality, matters more...
I'll say it again - pure is a relative term, a percentage term - bacteria die and people's lives are saved only by large absolute amounts of penicillin - regardless of their relative purity.
Florey's all out pursuit of purity quality over penicillin quantity was a moral failing of the highest possible order.
In the war against Hitler and his racist purity views, to work full out, from 1938 to 1945, on finding an all-white penicillin was as obscene as as seeking to preserve an all-white Australia --- or an all-white Germany......
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