Methods: The sister chromatid exchanges(SCE) frequency were counted in the sample of 33 patients with SCE different stain method, in the same time, we detected 30 normal controls.

• 方法:采用外周血淋巴细胞姐妹染色单体差别染色法检测技术,观察了33例海洛因成瘾者的姐妹染色单体交换(SCE)频率,同时检测30名健康者进行对照。