Which major pharmaceutical product innovation was originally discovered when scientist Alexander Fleming noticed a mold contamination had killed bacteria in his petri dishes?

Scientific product innovation often comes with fascinating backstories and unexpected challenges. The path from laboratory discovery to commercial product can involve unusual pivots, surprising applications, or remarkable persistence. This trivia question explores a notable example of scientific product innovation that transformed an industry and changed how we approach healthcare solutions.

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Penicillin
Aspirin
Insulin
Morphine