title: Detection of penicillinase production by four methods.
mesh_terms: D001419:Bacteria / Q000201:enzymology; D002511:Cephalosporins; D002863:Chromogenic Compounds; D006801:Humans; D008828:Microbiological Techniques; D010405:Penicillinase / Q000096:biosynthesis*; D001618:beta-Lactamases / Q000096:biosynthesis*
chemical_list: D002511:Cephalosporins; D002863:Chromogenic Compounds; D010405:Penicillinase; D001618:beta-Lactamases