title: Long-term stability studies on the International Reference Preparation of Newcastle Disease Vaccine (live).
mesh_terms: D000818:Animals; D002642:Chick Embryo; D006386:Hemagglutination Tests; D009522:Newcastle disease virus; D011309:Preservation, Biological; D013696:Temperature; D013997:Time Factors; D014613:Vaccines, Attenuated / Q000592:standards*; D014765:Viral Vaccines / Q000592:standards*
chemical_list: D014613:Vaccines, Attenuated; D014765:Viral Vaccines