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Penicillin was invented by Fleming in the year

  • A.1956
  • B.1917
  • C.1935
  • D.1929

Answer: D

It was 1929.

Fleming noticed in September 1928 that a stray mould had killed the staphylococci on a culture plate he had left out, and published the finding in 1929. It was not turned into a drug until Florey and Chain did so at Oxford in 1940.

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