title: Class I beta-lactamase expression in Pseudomonas aeruginosa and cephalosporin resistance.
mesh_terms: D002511:Cephalosporins / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D066298:In Vitro Techniques; D010405:Penicillinase / Q000378:metabolism*; D011550:Pseudomonas aeruginosa / Q000187:drug effects* / Q000201:enzymology
chemical_list: D002511:Cephalosporins; D010405:Penicillinase