The Wonder Drug (Cont.)

In our last article we discussed the twofold approach of the Northern Regional Research Laboratory (United States Department of Agricultural) to the problem of increasing penicillin production; namely, by finding more productive strains of the organism and by improving the medium with the introduction of corn-steep liquor and lactose (milk-sugar). In this article it is our purpose to discuss the methods of producing penicillin. You will, perhaps, recall that Florey and Heatly being unable to...