Researchers hae used the interaction between a polysaccharide called heparin and a peptide fragment of a protein called antithrombin III, which is contained in the bloodstream to control clotting.

• 研究者利用了肝素（一种多糖）和血液中的抗凝血酶III（一种多肽片断）之间的相互作用来控制凝固时间。