title: Vaccination against Newcastle disease: An assessment of haemagglutination inhibition titres obtained from field samples.
mesh_terms: D000367:Age Factors; D000818:Animals; D002645:Chickens; D004531:Eggs; D005260:Female; D006385:Hemagglutination Inhibition Tests; D009521:Newcastle Disease / Q000097:blood / Q000517:prevention & control*; D009522:Newcastle disease virus / Q000276:immunology*; D011201:Poultry Diseases / Q000097:blood / Q000517:prevention & control*; D014611:Vaccination / Q000662:veterinary*; D014765:Viral Vaccines
chemical_list: D014765:Viral Vaccines