Who discovered Penicillin
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Alexander Fleming is credited with the discovery of Penicillin. In 1928, while working at St. Mary’s Hospital in London, he observed that a mold called Penicillium notatum had contaminated one of his petri dishes, and the bacteria around the mold had died. This led him to conclude that the mold was releasing a substance that was inhibiting the growth of the bacteria. Fleming then conducted a series of experiments and found that this substance could be used to kill a wide range of bacteria that cause diseases. He named this substance Penicillin and went on to develop methods for its production and purification. Penicillin is now widely used as an antibiotic to treat various infections.