the routine laboratory monitoring of methicillin-resistant strains of staphylococcus aureus ( mrsa ) at a large teaching hospital led to the detection of a new , multiply-resistant strain of mrsa , which was resistant not only to penicillin , oxacillin , methicillin , cephamandole , erythromycin , tetracycline , kanamycin and gentamicin but also to rifampicin and sulphamethoxazole-trimethoprim .
C0030842
penicillin
C0029983
oxacillin