title: [Acute Marek's disease of the chicken (literature review and original studies). 1. Disease concept, incidence, etiology and epizootiology)].
mesh_terms: D000818:Animals; D001353:Avian Leukosis; D002645:Chickens; D010523:Peripheral Nervous System Diseases / Q000662:veterinary; D011201:Poultry Diseases
vernacular_title: Die akute Mareksche Krankheit des Huhns (Literaturübersicht und eigene Untersuchungen). l. Krankheitsbegriff, Verbreitung, Atiologie und Epizootiologie.