title: Spray vaccination with an improved F Newcastle disease vaccine. A comparison of efficacy with the B1 and La Sota vaccines.
mesh_terms: D000281:Administration, Intranasal; D000818:Animals; D002645:Chickens; D009521:Newcastle Disease / Q000517:prevention & control*; D009522:Newcastle disease virus / Q000276:immunology; D011201:Poultry Diseases / Q000517:prevention & control*; D014611:Vaccination / Q000379:methods / Q000662:veterinary*; D014765:Viral Vaccines
chemical_list: D014765:Viral Vaccines