title: Preliminary observations on Marek's disease in ducks and other avian species.
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000276:immunology* / Q000382:microbiology; D002645:Chickens; D004372:Ducks; D006566:Herpesviridae Infections / Q000662:veterinary*; D005779:Immunodiffusion; D066298:In Vitro Techniques; D014776:Virus Cultivation