title: Pyoderma gangrenosum with cellular immunity defect and red cell aplasia.
mesh_terms: D000368:Aged; D000741:Anemia, Aplastic / Q000209:etiology; D004912:Erythrocytes; D006801:Humans; D007111:Immunity, Cellular; D008297:Male; D011711:Pyoderma / Q000276:immunology*; D012883:Skin Ulcer / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology