Hairy-cell leukaemia.
D000368:Aged; D001773:Blood Cells / Q000473:pathology; D001853:Bone Marrow / Q000473:pathology; D001854:Bone Marrow Cells; D006801:Humans; D007938:Leukemia / Q000097:blood / Q000473:pathology*; D008206:Lymphatic Diseases / Q000097:blood / Q000473:pathology*; D008297:Male; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D013154:Spleen / Q000473:pathology