title: Nonprotective and temperature-sensitive variants of Marek's disease vaccine viruses.
mesh_terms: D000818:Animals; D000956:Antigens, Viral; D002478:Cells, Cultured; D002642:Chick Embryo; D002645:Chickens; D003673:Defective Viruses / Q000276:immunology; D008381:Herpesvirus 2, Gallid / Q000235:genetics / Q000276:immunology*; D008380:Marek Disease / Q000276:immunology* / Q000382:microbiology / Q000517:prevention & control*; D009154:Mutation; D013696:Temperature; D014765:Viral Vaccines / Q000276:immunology*; D014779:Virus Replication
chemical_list: D000956:Antigens, Viral; D014765:Viral Vaccines