On the natural history of the murine leukemias: presidential address.
D000818:Animals; D001853:Bone Marrow / Q000276:immunology; D007945:Leukemia, Lymphoid; D008223:Lymphoma; D051379:Mice; D051381:Rats; D012190:Retroviridae; D013950:Thymus Gland / Q000276:immunology