A Dirty Dish

Medical research was his field, a great discovery it would yield. He didn't know it , but today a stroke of luck would come his way. His carelessness would prove to be, a page from medical history. It seems he left some dishes lay, overnight, and then next day, around one dish he noticed mold. A blue-green fungus, it did hold. That was strange, it shouldn't be, so he tested it to see. What he found would do the trick. It was an antibiotic. A miracle drug for all mankind, Penicillin, was his find.