Sir Alexander Fleming

(1881—1955) bacteriologist and discoverer of penicillin

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Howard Walter Florey, Baron (1898—1968) experimental pathologist and bacteriologist

Sir Ernst Boris Chain (1906—1979) biochemist



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British bacteriologist, born in Scotland. He studied medicine at St Mary's Hospital, London, where he remained all his life. In 1922 he identified lysozyme, an enzyme that destroys bacteria, and in 1928 discovered the antibiotic penicillin. He shared the 1945 Nobel Prize for physiology or medicine with Florey and Chain, who first isolated the drug.

Subjects: Science and Mathematics — History.