[Objective]To study the effects and possible mechanisms of c9,t11-CLA and t10,c12-CLA on the expression of COX-2 of hepatoma carcinoma cell(Bel7402).

• [目的]采用体外细胞培养方法,研究c9,t11-CLA和t10,c12-CLA对肝癌细胞Bel7402的COX-2表达的影响和机制。