Stability of the apathogenic nononcogenic character of a turkey herpesvirus used to immunise fowls against Marek's disease.
D000818:Animals; D002645:Chickens; D006564:Herpesviridae / Q000276:immunology*; D008380:Marek Disease / Q000517:prevention & control*; D014422:Turkeys; D014765:Viral Vaccines / Q000032:analysis
D014765:Viral Vaccines