title: Detection of beta-lactamase production by gram-negative bacteria.
mesh_terms: D000581:Amidohydrolases / Q000096:biosynthesis*; D001419:Bacteria / Q000201:enzymology*; D002510:Cephalosporinase / Q000096:biosynthesis*; D004352:Drug Resistance, Microbial; D010405:Penicillinase / Q000096:biosynthesis*
chemical_list: D000581:Amidohydrolases; D002510:Cephalosporinase; D010405:Penicillinase