title: Typing of Rhizobium trifolii mutants by means of phages.
mesh_terms: D001434:Bacteriophage Typing; D004352:Drug Resistance, Microbial; D004917:Erythromycin / Q000494:pharmacology; D008242:Lysogeny; D009154:Mutation; D012231:Rhizobium / Q000145:classification* / Q000166:cytology / Q000187:drug effects; D013307:Streptomycin / Q000494:pharmacology
chemical_list: D004917:Erythromycin; D013307:Streptomycin