title: Properties of strains of Escherichia coli isolated from a variety of sources.
abstract: Strains of Escherichia coli causing urinary-tract infections were found to be more commonly haemolytic than were faecal strains. Strains from the introitus that subsequently gave rise to urinary-tract infections resembled urinary strains and those that did not give rise to infections resembled faecal strains. alpha-Haemolysin production was closely associated, in strains from a variety of different sources, with the production of a haemolysin detectable in liquid medium and with cytotoxicity in tissue culture.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D003093:Colitis, Ulcerative / Q000382:microbiology*; D046508:Culture Techniques; D004926:Escherichia coli / Q000276:immunology / Q000302:isolation & purification / Q000472:pathogenicity; D004927:Escherichia coli Infections / Q000382:microbiology*; D005243:Feces / Q000382:microbiology; D005260:Female; D005347:Fibroblasts / Q000187:drug effects; D006460:Hemolysin Proteins / Q000096:biosynthesis; D006801:Humans; D008297:Male; D011817:Rabbits; D012703:Serotyping; D012867:Skin / Q000187:drug effects; D014118:Toxins, Biological / Q000096:biosynthesis / Q000633:toxicity; D014521:Urethra / Q000382:microbiology; D014552:Urinary Tract Infections / Q000382:microbiology*
chemical_list: D006460:Hemolysin Proteins; D014118:Toxins, Biological