title: Spontaneous loss of methicillin resistance in Staphylococcus aureus.
mesh_terms: D008712:Methicillin / Q000494:pharmacology*; D010403:Penicillin Resistance; D010405:Penicillinase / Q000378:metabolism; D013210:Staphylococcus / Q000187:drug effects* / Q000201:enzymology
chemical_list: D010405:Penicillinase; D008712:Methicillin