Discovered in 1928 by Professor Alexander Fleming, and first, isolated in 1940 by Professor H. W. Florey and his co-workers Oxford. Pfizer research began in 1941 withfirst,labr%ratf.ry gypei-inraiit. p i r t H i i r i n g P o n i r i l H n b y
fermentation
the same year and recovering it. from the fermentation liquors. That, winter Pfizer first, supplied Penicillin for clinical experiment. In 1942 made first, delivery to U. S. Government. In 1943 Pfizer Pilot* Plant, was in full operation and ground broken for a large, modem plant, which was completed early in 1944, Pfizer has -been the World's Largest* Producer of Penicillin since it s early history in this country.
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