title: Letter: Origin of malignant lymphomas.
mesh_terms: D000368:Aged; D006644:Histiocytes / Q000166:cytology; D006689:Hodgkin Disease / Q000209:etiology* / Q000473:pathology; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008223:Lymphoma / Q000175:diagnosis / Q000209:etiology; D008297:Male; D013154:Spleen / Q000473:pathology; D013601:T-Lymphocytes