Which famous scientific product was accidentally discovered in 1928 when Alexander Fleming noticed that mold contamination in his lab was killing bacteria?

Throughout history, scientific products have revolutionized healthcare, technology, and everyday life. Some breakthroughs have become household names, while their origins remain less known. This trivia question tests your knowledge about a famous scientific product that changed medical practice forever. Do you know the story behind this groundbreaking innovation?

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Penicillin
Insulin
X-ray imaging
Teflon