Objective:To evaluate the function of ursolic acid on the proliferation of human Hepatoma carcinoma cells SMMC-7721.And to study the effect of ursolic acid on the apoptosis of SMMC-7721 by flow cytometry.Methods:Human hepatoma SMMC-7721 cells were co-cultured with different doses of ursolic acid for 24 h,72 h,respectively.The absorbance value was evaluated by neutral red staining method.The influence of ursolic acid on the proliferation of hepatoma cells was evaluated;and the apoptosis was detected by using...