Chromosomal aberration, sister chromatid exchange ( SCE), activity of ribosomal ribonucleic acid ( rRNA) gene and lymphocytic division kinetics were studied on the patients with hepatitis B. The results indicated that ( 1) both of chromosomal aberration rate and SCE rate of the patients. 本文对乙型肝炎患者的染色体畸变、姐妹染色单体互换、核糖体核糖核酸基因(rRNA-gene)活性及淋巴细胞分裂动力进行了研究。