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ＤＡ（柔红霉素、阿糖胞苷）和ＨＡ（高三尖杉脂碱、阿糖胞苷）是诱导缓解初治急性非淋巴细胞白血病（ＡＮＬＬ）应用最多的化疗方案，其有效率为５４％～７８％，需２８个疗程才达完全缓解［１～３］。近年来，在ＤＡ和ＨＡ方案基础上加用环磷酰胺或足叶乙甙治疗初治ＡＮＬ
DA (daunorubicin, cytarabine) and HA (homocysteine, cytarabine) are the most commonly used chemotherapy regimens for the induction of remission in newly diagnosed acute nonlymphocytic leukemia (ANLL), with an effective rate of 54. % ~ 78%, need 2 to 8 courses to achieve complete remission [1 ~ 3]. In recent years, the use of cyclophosphamide or etoposide in the treatment of newly treated ANL based on DA and HA regimens