Word: notatum
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Dates: during 2000-2009
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...extracted from body fluids. But when he looked at the dishes, Fleming noticed that the bacterial cultures within were dying off. The killer: "mold juice," as he called it, the product of spores that had probably wafted in from a lab downstairs. Fleming determined that the spores were Penicillium notatum and renamed the juice penicillin. However, it was a decade before other scientists took notice of Fleming's work, purified penicillin and turned it into a miracle drug. --By Michael Lemonick