BACKGROUND AND AIM:Effects of tanshinoneⅡA(TanⅡA)on proliferation and apoptosis of the human gastric cancer cell line BGC-823 were studied.MATERIALS AND METHODS:The inhibitory effect on proliferation of BGC-823 cells was evaluated in vitro by using MTT colorimetric assay after cells were treated with TanⅡA at various concentrations(0-10 μg/ml)for 48 h and 72 h.Cell apoptosis was analyzed by HE staining,DNA agarose gel electrophoresis and flow cytometry after BGC-823 cells were treated with 2,5,10 μg/ml TanⅡ...