title: Results of 1976 field trials with oral Escherichia coli vaccination of sows.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001428:Bacterial Vaccines / Q000008:administration & dosage*; D004926:Escherichia coli / Q000276:immunology*; D004927:Escherichia coli Infections / Q000517:prevention & control / Q000662:veterinary*; D005260:Female; D013552:Swine; D013553:Swine Diseases / Q000517:prevention & control*; D014611:Vaccination / Q000662:veterinary
chemical_list: D001428:Bacterial Vaccines