title: Resistance of Escherichia coli to penicillins. 3. AmpB, a locus affecting episomally and chromosomally mediated resistance to ampicillin and chlorampheincol.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D002701:Chloramphenicol / Q000494:pharmacology; D003433:Crosses, Genetic; D004926:Escherichia coli; D005111:Extrachromosomal Inheritance; D005827:Genetics, Microbial; D010403:Penicillin Resistance
chemical_list: D002701:Chloramphenicol; D000667:Ampicillin