title: Antibacterial activity of combinations of cefazolin and semisynthetic penicillins.
abstract: The antibacterial activity of cephalosporin (CS) and semisynthetic penicillins was studied using CS-resistant strains of Escherichia freundii and Proteus morganii. A synergistic growth inhibitory action toward these microorganisms was demonstrated by a qualitative method and confirmed by a quantitative determination.
mesh_terms: D002437:Cefazolin / Q000494:pharmacology*; D002511:Cephalosporins / Q000494:pharmacology*; D003023:Cloxacillin / Q000494:pharmacology*; D004009:Dicloxacillin / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004357:Drug Synergism; D004925:Escherichia / Q000187:drug effects; D010403:Penicillin Resistance; D011511:Proteus / Q000187:drug effects; D012044:Regression Analysis
chemical_list: D002511:Cephalosporins; D004009:Dicloxacillin; D002437:Cefazolin; D003023:Cloxacillin