title: Cryptic plasmids in Enterobacteriaceae of the Bethesda-Ballerup group.
mesh_terms: D000667:Ampicillin / Q000378:metabolism; D002512:Cephalothin / Q000378:metabolism; D002954:Citrobacter / Q000187:drug effects* / Q000235:genetics; D004755:Enterobacteriaceae / Q000235:genetics*; D004925:Escherichia / Q000187:drug effects* / Q000235:genetics; D010403:Penicillin Resistance; D010957:Plasmids; D011815:R Factors
chemical_list: D000667:Ampicillin; D002512:Cephalothin