Inhibition of secoisolariciresinol diglucoside on lung cancer cell line A549 and its mechanism Inhibition of secoisolariciresinol diglucoside on lung cancer cell line A549 and its mechanism Influences of Oxytropis falcata on proliferation of SMMC-7721 Hepatocarcinoma cells and expression of MMP-2 Effect of neferine on hepatic stellate cells in Collagen-I, TIMP-1 and MMP-2