Penicillin - GCSE History Definition
Reviewed by: Zoe Wade
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Penicillin was the first antibiotic to be developed and is used to treat infections caused by bacteria. It was discovered by Alexander Fleming in 1928 when he noticed that mould growing in his lab killed the bacteria around it. Penicillin works by attacking the walls of bacteria, eventually killing them or stopping their growth. This discovery was incredibly important in history because it allowed doctors to treat many infections that previously led to serious illness or death. Penicillin became widely used during World War II and helped save many lives, marking a significant moment in medical history.
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