title: Are molecular weight and anti-Xa activity sufficient to predict the antithrombotic power of heparin fractions.
mesh_terms: D000818:Animals; D005170:Factor X / Q000037:antagonists & inhibitors*; D015951:Factor Xa; D006493:Heparin / Q000008:administration & dosage / Q000494:pharmacology*; D007279:Injections, Subcutaneous; D008297:Male; D008970:Molecular Weight; D051381:Rats; D011919:Rats, Inbred Strains; D013927:Thrombosis / Q000188:drug therapy*
chemical_list: D005170:Factor X; D006493:Heparin; D015951:Factor Xa