title: Tolerance and immunity in chickens after congenital and contact infection with an avian leukosis virus.
mesh_terms: D000818:Animals; D001354:Avian Leukosis Virus; D002645:Chickens; D006801:Humans; D007108:Immune Tolerance; D007109:Immunity; D008460:Meat; D011200:Poultry; D011201:Poultry Diseases; D014780:Viruses
keywords: POULTRY/diseases; VIRUSES