Alexander Fleming, Scottish Biologist

Alexander Fleming (August 6, 1881 - March 11, 1955) was a Scottish biologist and pharmacologist. He wrote many articles on bacteriology, immunology, and chemotherapy. His best-known discoveries are the discovery of the enzyme lysozyme and the antibiotic substance penicillin from the mold Penicillium notatum, for which he shared the Nobel Prize in Physiology or Medicine (1945) with Howard Florey and Ernst Boris Chain. Fleming's accidental discovery and isolation of penicillin marked the start of modern antibiotics

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