title: Proceedings: Critical analysis of platelet factor 4 (antiheparin activity) assays.
mesh_terms: D001681:Biological Assay; D001779:Blood Coagulation Factors / Q000032:analysis*; D008722:Methods; D010978:Platelet Factor 4 / Q000032:analysis*
chemical_list: D001779:Blood Coagulation Factors; D010978:Platelet Factor 4