Twelve year resistance against injecting crude natural penicillin was normal...science

Doctors Alexander Fleming and Howard Florey did nothing at all about injecting crude natural penicillin into patients to try and save lives during the 12 long years between the Fall of 1928 and and the Fall of 1940.

But they did nothing more (less ?) than did all the other doctors in the world.

Their (lack of) response to the great potential in a crude penicillium liquid that was very non-toxic to primates and very toxic to death-dealing bacteria was perfectly normal..science.

Because doctors - just like the rest of us - also have unconscious Ids and also have unconscious fears about monsters.

Back in that era - pace H P Lovecraft and innumerable horror movies - the unconscious monster feared the most were the slime beings lying an uneasy halfway between stable solids and mobile liquids.

The scientific reluctance to inject the poop and pee of slime molds into the temple of the human body might have had a multiple of scientific excuses to support it but let's be frank - it was really was just an Id thing .

After all , doctors had no such reluctance to inject all sorts of man-made chemicals into the body - very dangerous chemicals like Salvarsan and Sulfa drugs.

They also had no reluctance to inject dangerous horse serum into humans.