Objective To study the effects of DMSO,ATRA and 9 cis RA on cholangiocarcinoma cell line QBC939.Methods Cultured QBC939 cells were treated with DMSO,ATRA or 9 cis RA.

• 目的观察二甲基亚砜(DMSO)、全反式维甲酸(ATRA)和9顺式维甲酸(9cisRA)对人胆管癌细胞株QBC939的作用,筛选对它有效的分化诱导剂。