A Rare Recording of Alexander Fleming

Sir Alexander Fleming (August 6, 1881 – March 11, 1955) was a Scottish biologist, pharmacologist and botanist. He wrote many articles on bacteriology, immunology, and chemotherapy. His best-known discoveries are the enzyme lysozyme in 1923 and the antibiotic substance penicillin from the mould Penicillium notatum in 1928, for which he shared the Nobel Prize in Physiology or Medicine in 1945 with Howard Florey and Ernst Boris Chain.

The following is from a 1950 talk he gave on the development of antibiotics.

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