title: Comparative 50% protective dose assays (PD50) of Marek's disease virus strain CVI988.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D046508:Culture Techniques; D004372:Ducks / Q000196:embryology; D005347:Fibroblasts; D008381:Herpesvirus 2, Gallid / Q000276:immunology*; D008380:Marek Disease / Q000517:prevention & control*; D014765:Viral Vaccines / Q000008:administration & dosage / Q000276:immunology*
chemical_list: D014765:Viral Vaccines