Fleming's observation led to the realization that the mold produced a substance with antibacterial properties, which he named penicillin. However, it took several more years of research and experimentation to isolate and purify the penicillin substance for medical use.
Penicillin proved to be a highly effective antibiotic, capable of killing a wide range of bacteria. It was first used to treat bacterial infections during World War II and had a significant impact on reducing mortality rates among wounded soldiers.
The discovery of penicillin revolutionized the field of medicine, opening the door to the development of many other antibiotics. It marked the beginning of the era of antibiotics, which transformed the treatment of infectious diseases and saved countless lives.
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