1.

An "International Unit" of penicillin activity established in 1944 is amount of penicillin equivalent to

A. 0.6 micrograms of crystalline penicillin G of about 98% purity
B. 0.6 micrograms of crystalline penicillin F of about 98% purity
C. 0.8 micrograms of crystalline penicillin G of about 98% purity
D. 0.8 micrograms of crystalline penicillin G of about 90% purity
Answer» B. 0.6 micrograms of crystalline penicillin F of about 98% purity


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