Previous studies had demonstrated that alginates from Sargassum sp. (Phaeophyta) showed a considerable activity against various murine tumors. The aim present study is to investigate the in vivo antitumor activity of two alginates (SVHV and SVLV) with di V erent viscosity extracted from brown seaweed Sargassum vulgare C. Agardh against Sarcoma 180 cells transplanted in mice. Both alginates inhibited growth of s...