title: Observations on the differences concerning the immunizing ability of Pasteurella multocida of avian origin.
mesh_terms: D000818:Animals; D001428:Bacterial Vaccines; D002645:Chickens; D006386:Hemagglutination Tests; D010325:Pasteurella / Q000276:immunology*; D010326:Pasteurella Infections / Q000517:prevention & control*; D011201:Poultry Diseases / Q000517:prevention & control*; D014611:Vaccination
chemical_list: D001428:Bacterial Vaccines