title: [Isolation of protective antigenic fractions from bacteria of the intestinal group: a review of foreign patents].
mesh_terms: D000942:Antigens, Bacterial / Q000302:isolation & purification*; D001428:Bacterial Vaccines / Q000302:isolation & purification; D001530:Belgium; D001704:Biopolymers; D004739:England; D004755:Enterobacteriaceae / Q000276:immunology*; D005602:France; D005860:Germany, West; D007158:Immunologic Techniques; D010330:Patents as Topic; D014481:United States
chemical_list: D000942:Antigens, Bacterial; D001428:Bacterial Vaccines; D001704:Biopolymers
vernacular_title: Vydelenie protektivnykh antigennykh fraktsiĭ iz bakteriĭ kishechnoĭ gruppy: obzor zarubezhnykh patentov.