Prospect of holothurian glycosaminoglycan in tumor metastasis treatment Prospect of holothurian glycosaminoglycan in tumor metastasis treatment Clinical observation of lower extremity deep venous hrombosis (DVT) postoperative fracture treated by Maixuekang capsule and low molecular heparin calcium (Subilin) Clonging and Expression of Heparinase III Gene from Flavobacterium heparinum and Characterization of the Recombinant Fusion Enzyme