To investigate the effect of fucoidan induced apoptosis in human hepatocellular carcinoma SMMC-7721 cells and the possible mechanism,the cellular viability of fucoidan on the cells was assessed by MTT assays in vitro.The change of the cell ultrastructure was detected by using transmission electron microscopy.Cellular apoptosis was measured by flow cytometry.The levels of GSH,MDA and the activity of SOD in the cells for 24 h treated with fucoidan were detected by spectro photometric assays.Western blot was u...