title: Explanation of the apparent association of host specificity determinants with fi+ R factors.
mesh_terms: D002701:Chloramphenicol / Q000494:pharmacology; D003090:Coliphages; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects; D005827:Genetics, Microbial; D013307:Streptomycin / Q000494:pharmacology; D013449:Sulfonamides / Q000494:pharmacology; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D013449:Sulfonamides; D002701:Chloramphenicol; D013752:Tetracycline; D013307:Streptomycin