studies of the action of penicillin on b. hermsii strain hs1 revealed the following : ( i ) the in vitro minimum inhibitory concentration and minimum bactericidal concentration of benzylpenicillin for this strain were 0.4 and 3.1 nmol/ml ( 0.15 and 1.1 micrograms/ml ) , respectively ;
C0030842
penicillin
C0030827
benzylpenicillin