Question

Absorption and excretion of four penicillins; penicillin g, penicillin v, phenethicillin and phenylmercaptomethyl penicillin

Answer 1

I said pic...I think it's correct answer

Answer 2

Answer:

A microbiological plate method, with Sarcina Zutea as test organism, is described for the assay of penicillin in feeding stuffs. The method is capable of determining penicillin in samples containing less than 5 units per g, at which level plate assay methods with Bacillus subtilis are insufficiently sensitive.