title: Susceptibility of penicillins and cephalosporins to beta-lactamases assessed by a new test.
mesh_terms: D002511:Cephalosporins; D004755:Enterobacteriaceae / Q000201:enzymology; D004926:Escherichia coli / Q000201:enzymology; D007709:Klebsiella / Q000201:enzymology; D008722:Methods; D010405:Penicillinase / Q000378:metabolism; D010406:Penicillins; D013045:Species Specificity; D013329:Structure-Activity Relationship
chemical_list: D002511:Cephalosporins; D010406:Penicillins; D010405:Penicillinase