Relation ship between effect of tetramethylpyrazine and Dan shen on inhibiting Lewis lung carcinoma growth and tumorangiogenesis Comparison on antitumor effects of different vinorelbine preparations Studies on antitumor effect of inflexusin and inflexusin D Effect of ray cartilage glycosaminoglycans(RCG)on the expression of MMP-9 in Lewis lung carcinoma Comparison on antitumor effects of different vinorelbine preparations Isolation, purification, and biological activities of ray cartilage glycosaminoglycans