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May 13, 2024 · Alexander Fleming (born August 6, 1881, Lochfield Farm, Darvel, Ayrshire, Scotland—died March 11, 1955, London, England) was a Scottish bacteriologist best known for his discovery of penicillin. Fleming had a genius for technical ingenuity and original observation.
In 1921 he discovered a substance in nasal mucus that causes bacteria to disintegrate. Fleming and a colleague subsequently detected this substance, which he named lysozyme, in human blood serum, tears, saliva, milk, and a wide variety of other fluids.
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He discovered lysozyme, an enzyme occurring in many body fluids, such as tears. It had a natural antibacterial effect, but not against the strongest infectious agents.
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Sir Alexander Fleming FRS FRSE FRCS [1] (6 August 1881 – 11 March 1955) was a Scottish physician and microbiologist, best known for discovering the world's first broadly effective antibiotic substance, which he named penicillin. His discovery in 1928 of what was later named benzylpenicillin (or penicillin G) from the mould Penicillium rubens ...
Alexander Fleming was born in a remote, rural part of Scotland. The seventh of eight siblings and half-siblings, his family worked an 800-acre farm a mile from the nearest house.
Discoveries. Alexander Fleming's discovery of penicillin as an antiseptic, followed by the work of Howard Florey, Ernst Chain and Norman Heatley, led to the development of penicillin as an antibiotic during the early years of the Second World War. By 1943 penicillin was being used to help treat British, American and allied troops.
