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Biologist, pharmacologist and botanist.
His best-known discoveries are the enzyme lysozyme. -
Sir Alexander Fleming, was a Scottish biologist, pharmacologist and botanist. His best-known discoveries are the enzyme lysozyme in 1923 and the antibiotic substance benzylpenicillin.
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When he was in his laboratory he observed that a fungus had grown. This was what he did he discovered penicillin
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He received the Nobel Prize for Medicine in 1945 for making great discoveries, which were lysozyme and penicillin.
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He died at the age of 73, in London
