Question

wwhat is antibiotic who discovered it ​

Answer 1

Explanation:

But it was not until 1928 that penicillin, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St. Mary's Hospital in London.

Answer 2

Answer:

Chemicals produced by microorganisms that kill or inhibit the growth of other harmful microorganisms. It was discovered by ALEXANDER FLEMING