title: The chromosomal integration of a  -lactamase gene derived from the P-type R-factor RP1 in Escherichia coli.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D002228:Carbenicillin / Q000494:pharmacology; D002876:Chromosomes, Bacterial; D004926:Escherichia coli / Q000187:drug effects / Q000201:enzymology*; D005796:Genes; D008040:Genetic Linkage; D010403:Penicillin Resistance; D010405:Penicillinase
chemical_list: D000667:Ampicillin; D010405:Penicillinase; D002228:Carbenicillin