title: The chromosogenic assay of low levels of heparin in plasma: probable effect of platelets.
mesh_terms: D001792:Blood Platelets / Q000032:analysis*; D005170:Factor X / Q000032:analysis; D006493:Heparin / Q000097:blood*; D006801:Humans
chemical_list: D005170:Factor X; D006493:Heparin