title: Focal lesion of Friend's disease in bone marrow.
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000473:pathology*; D005622:Friend murine leukemia virus; D007942:Leukemia, Experimental / Q000473:pathology*; D008099:Liver / Q000473:pathology; D008297:Male; D051379:Mice; D008854:Microscopy, Electron; D013154:Spleen / Q000473:pathology