comparison of antithrombotic activity of two heparin fragments pk 10169 ( mol . wt . 5,000 ) and emt 680 ( mol . wt . 2,500 ) and unfractionated heparin in a rabbit experimental thrombosis model : relative importance of systemic anti-xa and anti-iia activities .
C0019134
unfractionated heparin
C0019139
anti-xa