男,35岁,已婚,工人。因面黄、乏力半年,于1987年12月7日入院。病程中偶有齿龈出血。无胸骨痛及发热。曾用硫酸亚铁、维生素B_(12)、叶酸、维生素C治疗1月无效。既往无长期用药及毒物接触史。家族中无恶性肿瘤及血液病史。查体:贫血貌,表浅淋巴结无肿大,心界向两侧扩大,心率90次/分,律整,心音有力,心 Male, 35 years old, married, worker. Due to face yellow, fatigue half a year, on December 7, 1987 admission. Occasionally bleeding gums in the course of the disease. No sore throat and fever. Have used ferrous sulfate, vitamin B_ (12), folic acid, vitamin C treatment of January invalid. Past no long-term medication and poison exposure history. Family no history of malignant tumors and blood. Physical examination: anemia, superficial lymph nodes without swelling, the heart to both sides of the expansion, heart rate 90 beats / min, law, heart sound, heart