Existing comment:
Sample of penicillin mold
1928
produced by Alexander Fleming
In the modern world, few innovations occur in isolation. British bacteriologist Alexander Fleming discovered penicillin in his lab in 1928, but its benefits were unproven. Not until 1941, when British researchers brought a small sample of penicillin to a U.S. lab, was it discovered to be the most effective and safe antibacterial agent known. |