Penicillin was first noticed in 1928 by Scottish bacteriologist Alexander Fleming. In his observations of bacteria growing on a culture plate, he noticed that some were harmed by a mold called Penicillium notatum that had contaminated the plate. About 10 years later, Ernst Chain, Howard Florey, and others isolated penicillin, the ingredient responsible for this effect. They showed that it worked very well against severe bacterial infections.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies.
Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style