Peromet, M Specific assay of gentamicin in the presence of penicillins and cephalosporins. Use of commercially manufactured beta-lactamases. [electronic resource] - Chemotherapy 1974 - 1-5 p. digital Publication Type: Journal Article ISSN: 0009-3157 Standard No.: 10.1159/000221785 doi Subjects--Topical Terms: Amidohydrolases--pharmacologyBacillus subtilis--drug effectsBiological AssayCephalosporins--antagonists & inhibitorsCulture MediaDiffusionGentamicins--analysisHumansMethodsPenicillinase--pharmacologyPenicillins--antagonists & inhibitors