Heterogeneity of heparin.
D001681:Biological Assay; D001777:Blood Coagulation / Q000187:drug effects; D055598:Chemical Phenomena; D002626:Chemistry, Pharmaceutical; D002627:Chemistry, Physical; D006493:Heparin / Q000494:pharmacology*; D066298:In Vitro Techniques; D008970:Molecular Weight
D006493:Heparin