title: Inactivation of isoxazolyl penicillins by beta-lactamases.
mesh_terms: D004355:Drug Stability; D006868:Hydrolysis; D008712:Methicillin / Q000037:antagonists & inhibitors; D010406:Penicillins / Q000037:antagonists & inhibitors*; D001618:beta-Lactamases / Q000494:pharmacology*
chemical_list: D010406:Penicillins; D001618:beta-Lactamases; D008712:Methicillin