| abstract |
Compositions and methods for preventing thrombogenesis can include antithrombin and heparin. In one example, a conjugate of antithrombin and heparin where at least 50 wt% of the heparin is conjugated to antithrombin can be present. Furthermore, in one example, at least 98 wt% of the heparin in the composition has a molecular weight greater than 3,000 Daltons. |