我们检测了三氧化二砷 (Ａｓ2 Ｏ3 )诱导ＮＢ4细胞凋亡时的端粒酶活性 ,旨在探讨细胞凋亡与端粒酶调控之间的关系。材料和方法1　细胞株　ＮＢ4细胞株由苏州大学第一医院 ,江苏省血液病研究所惠赠。2　主要试剂　Ａｓ2 Ｏ3 购自Ｓｉｇｍａ公司 ,用 1ｍｏｌ/ＬＮａＯＨ将Ａｓ2 We examined the telomerase activity of As2 O3-induced apoptosis in NB4 cells in order to investigate the relationship between apoptosis and telomerase regulation. Materials and methods 1 cell line NB4 cell line from Suzhou University First Hospital, Jiangsu Provincial Institute of Hematology benefit. 2 As2 O3, the main reagent, was purchased from Sigma Company, and As2 was added with 1 mol / L NaOH