History of penicillin History of penicillin The history of penicillin follows a number of observations and discoveries of apparent evidence of antibiotic activity in molds before the modern isolation of the chemical penicillin in 1928. There are anecdotes about ancient societies using molds to treat infections, and in the following centuries many people observed the inhibition of bacterial growth by various molds. However, it is unknown if the species involved were "Penicillium" species or if the antimicrobial substances produced were penicillin. The Scottish physician Alexander Fleming was the first to suggest that a "Penicillium" mold must secrete an antibacterial substance, and the first
A. S. Valentine to the game for the second half. A. S. Valentine A. S. Valentine was an early professional football player for the Allegheny Athletic Association. He served as the team's quarterback in 1890 and 1891. However, he jumped to the rival Pittsburgh Athletic Club in 1892. Valentine played for Pittsburgh in their first two games. Then, without warning, he suddenly jumped back to the Allegheny team. Some Pittsburgh A.C. members accused Allegheny of enticing him back, while others charged he had all along been a spy for them. During Allegheny's two games against the Pittsburgh A.C. that year, Valentine played as