Studies on a virus isolated from a calf affected by lymphatic leukemia. I. Comparison of the virulence of the virus cultivated on chick embryo and on tissue culture.
D000818:Animals; D002417:Cattle; D002642:Chick Embryo; D007938:Leukemia; D007942:Leukemia, Experimental; D007945:Leukemia, Lymphoid; D008214:Lymphocytes; D009858:Oncogenic Viruses; D014774:Virulence
LEUKEMIA, EXPERIMENTAL; LEUKEMIA, LYMPHOCYTIC; TUMOR VIRUSES