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What did Alexander Fleming discover?

Retry Correct Incorrect According to the American Chemical Society, Alexander Fleming noted that the discharge from some mold was keeping Staphylococcus bacteria from growing in a petri dish. This discovery would usher in the antibiotic age, which is considered one of the greatest advancements in therapeutic medicine in history.

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Universal History Archive/Universal Images Group via Getty Images

Universal History Archive/Universal Images Group via Getty Images

What did Alexander Fleming discover?

• Valium
• Viagra
• Penicillin
• Aspirin