what was Fleming's hypothesis and results supporting it?
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Answer:
Fleming suggested that the mold was producing a chemical that killed the bacteria. He decided to isolate this substance and test it to see if it would kill bacteria. Fleming grew some Penicillium mold in a nutrient broth.
Answer:
In 1928 Alexander Fleming discovered penicillin, though he did not realize the full significance of his discovery for at least another decade. He eventually received the Nobel Prize in Physiology or Medicine in 1945.
As far back as the 19th century, antagonism between certain bacteria and molds had been observed, and a name was given to this phenomenon—antibiosis—but little was made of these observations. A folk tradition using molds in medicine was similarly neglected. In 1928 Alexander Fleming (1881–1955) discovered penicillin, made from the Penicillium notatum mold, but he did not receive the Nobel Prize in Physiology or Medicine for his discovery until 1945. Fleming himself did not realize how important his discovery was; for a decade after, he focused instead on penicillin’s potential use as a topical antiseptic for wounds and surface infections and as a means of isolating certain bacteria in laboratory cultures. It was left to his fellow Nobelists, Howard Florey and Ernst Chain, to demonstrate in 1940 that penicillin could be used as a therapeutic agent to fight a large number of bacterial diseases.
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