title: Actinobacillus pleuropneumoniae serotype 5, subtypes a and b: cross protection experiments.
authors.forename: R
authors.initials: R
authors.lastname: Nielsen
mesh_terms: D000188:Actinobacillus / Q000145:classification*; D000189:Actinobacillus Infections / Q000517:prevention & control / Q000662:veterinary*; D000818:Animals; D001428:Bacterial Vaccines; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology / Q000517:prevention & control*
chemical_list: D001428:Bacterial Vaccines