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A Long and Illustrious History

In which year did Alexander Fleming discover penicillin?

A1918
B1924
C1928 ✓
D1935

Explanation

Alexander Fleming discovered penicillin in 1928 when he noticed that mould had contaminated and killed bacteria in one of his petri dishes. He received the Nobel Prize for this discovery in 1945.

mediumpenicillin1928fleming

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