title: What is the nature of E. coli antigens? An attempt to analyse the K-antigens by various serological methods.
mesh_terms: D000372:Agglutination Tests; D000941:Antigens / Q000032:analysis*; D001426:Bacterial Proteins / Q000032:analysis; D004926:Escherichia coli / Q000276:immunology*; D006386:Hemagglutination Tests; D008070:Lipopolysaccharides / Q000032:analysis; D011135:Polysaccharides, Bacterial / Q000032:analysis*
chemical_list: D000941:Antigens; D001426:Bacterial Proteins; D008070:Lipopolysaccharides; D011135:Polysaccharides, Bacterial