Noun
British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered in 1928 by Sir Alexander Fleming (1906-1979)
Source: WordNetFleming finally abandoned penicillin, and not long after he did, Howard Florey and Ernst Boris Chain at the Radcliffe Infirmary in Oxford took up researching and mass-producing it, with funds from the U.S. and British governments. Source: Internet
In Oxford, Ernst Boris Chain and Edward Abraham discovered how to isolate and concentrate penicillin. Source: Internet