title: Inactivation of penicillins and cephalosporins by enzymes.
mesh_terms: D002511:Cephalosporins / Q000378:metabolism*; D006801:Humans; D010403:Penicillin Resistance; D010406:Penicillins / Q000378:metabolism*; D013290:Streptococcal Infections / Q000201:enzymology*; D013492:Suppuration
chemical_list: D002511:Cephalosporins; D010406:Penicillins