The use of a combined vaccine against Newcastle disease and infectious bronchitis.
D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D001991:Bronchitis / Q000517:prevention & control / Q000662:veterinary*; D002645:Chickens; D006385:Hemagglutination Inhibition Tests; D009521:Newcastle Disease / Q000276:immunology*; D011201:Poultry Diseases / Q000517:prevention & control*; D014765:Viral Vaccines / Q000008:administration & dosage*; D014777:Virus Diseases / Q000517:prevention & control / Q000662:veterinary*
D000914:Antibodies, Viral; D014765:Viral Vaccines