Five-year-old Brittney is diagnosed with strep throat. She is given a prescription for penicillin and assured that she will feel better in a day or two.
Just a century or two before, Brittney might not have recovered from this illness. How did scientists discover this important drug?

In 1928 Dr Alexander Fleming returned from a holiday to find mold growing on a Petri dish of Staphylococcus bacteria. He noticed the mold seemed to be preventing the bacteria around it from growing. He soon identified that the mold produced a self-defense chemical that could kill bacteria

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Five-year-old Brittney is diagnosed with strep throat. She is given a prescription for penicillin and assured that she will feel better in a day or two. Just a century or two before, Brittney might not have recovered from this illness. How did scientists discover this important drug?

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Five-year-old Brittney is diagnosed with strep throat. She is given a prescription for penicillin and assured that she will feel better in a day or two.
Just a century or two before, Brittney might not have recovered from this illness. How did scientists discover this important drug?