Lymphoid leukosis virus: a survey of commercial breeding flocks for genetic resistance and incidence of embryo infection.
D000818:Animals; D001353:Avian Leukosis / Q000276:immunology*; D002642:Chick Embryo / Q000276:immunology*; D009500:Neutralization Tests; D010641:Phenotype; D011201:Poultry Diseases / Q000276:immunology*; D012328:RNA Viruses / Q000276:immunology*