title: [Distribution of antigen types and the maintenance of R factor in Escherichia coli isolated from the urine of the patients with urinary tract infections].
mesh_terms: D000941:Antigens; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000276:immunology*; D006801:Humans; D014552:Urinary Tract Infections / Q000382:microbiology*
chemical_list: D000941:Antigens