Methods:The level of Epos were checked by means of radio immunoassay in 38 cases of acute leukemia, 19 cases of deadly solid tumor and 15 cases of healthy children.

• 方法 :用放射免疫分析法测定 38例急性白血病 ( AL)、1 9例恶性实体瘤患儿及 1 5例健康儿童血清 Epo水平。