title: Cross immunity induced by ribosomal fraction obtained from Escherichia coli 055 B5.
mesh_terms: D000818:Animals; D004926:Escherichia coli / Q000276:immunology*; D005260:Female; D007114:Immunization / Q000379:methods*; D007274:Injections, Intraperitoneal; D051379:Mice; D012335:RNA, Ribosomal / Q000494:pharmacology*
chemical_list: D012335:RNA, Ribosomal