Establishment and application of implantation model of human hepatocellular carcinoma in nude mice Inhibitory effect of buddlejasaponin Ⅳ on hepatocarcinoma 22(H22)in mice Studies of apoptosis on K562 cell line induced by pseudolaric acid B in vitro Inhibitory effect of the secretion of Pythium oligandrum on plant pathogenic fungi and the control effect against tomato gray mould Ecological toxicity of aluminum-based coagulant on representative corps in neutral environment Optimal processing technique of vinegar-processed Halite Violaceous