例1,患者,女,16个月,因发热1月余伴面色苍白,于1989年2月14日来本院首诊。患儿系第二胎,双胎之大。父身体健康,母半哑,非近亲结婚,孕期无特殊。家中常年堆放农药。体格检查:T38℃,重度贫血貌,皮肤粘膜可见散在瘀斑、瘀点,浅表淋巴结不肿大。胸骨无压痛,两肺呼吸音粗,心尖区可闻及Ⅱ级收缩期杂音。肝、脾不肿大。实验室检查: Example 1, patients, women, 16 months, due to fever in January with pale, in February 14, 1989 first visit to our hospital. Children with a second child, twin big. The father is healthy, semi-dumb, non-cousin married, no special during pregnancy. Piled perennial perennials at home. Physical examination: T38 ℃, severe anemia, skin and mucous membranes visible scattered ecchymosis, petechia, superficial lymph nodes is not enlarged. No tenderness of the sternum, coarse breath sounds of both lungs, apex area can be heard and Ⅱ systolic murmur. Liver, spleen not swollen. Laboratory examination: