Leukemia in germfree rats.
D000406:AKR murine leukemia virus / Q000472:pathogenicity*; D000818:Animals; D005856:Germ-Free Life; D007942:Leukemia, Experimental / Q000209:etiology*; D007953:Leukemia, Radiation-Induced; D008854:Microscopy, Electron; D051381:Rats; D013945:Thymoma / Q000473:pathology