(1881-1955) English scientist who - in 1928 - observed that a mold called Penicillium killed germs. This discovery resulted in the development of antibiotics - which attack or weaken bacteria that cause many diseases. Antibiotics were not widely used

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1. (1881-1955) English scientist who - in 1928 - observed that a mold called Penicillium killed germs. This discovery resulted in the development of antibiotics - which attack or weaken bacteria that cause many diseases. Antibiotics were not widely used