Activity of Penicillin in vitro

Gladys L. Hobby, K. Meyer, Eleanor Chaffee

Experimental Biology and Medicine · 1942 · 89 citations · 0 references

Concepts

Abstract

The observations of Florey, et al. on the antibacterial activity of penicillin against Gram positive organisms are confirmed and extended. Preparations have been obtained of such activity that 0.03 γ inhibits the growth of 2 to 4 million hemolytic streptococci. This represents an equivalent of 240-250 Oxford units per mg.