The true story of how penicillin was discovered from mold, exploring the scientific breakthrough, its impact on medicine, and ...

Scientist Alexander Fleming discovered the mold could kill bacteria. — -- A mold sample may seem like an unlikely prize, but a sample of penicillin mold pulled in more than $14,000 when it was ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. A culture dish is used to illustrate the action of penicillin at Squibb Lab in New Brunswick, N.J., in 1943. Post-Dispatch photo.