title: Letter: Von Willebrand factor and factor-viii-related antigen.
mesh_terms: D000941:Antigens / Q000302:isolation & purification*; D005169:Factor VIII / Q000032:analysis*; D006801:Humans; D010973:Platelet Adhesiveness / Q000187:drug effects; D012310:Ristocetin / Q000494:pharmacology; D014842:von Willebrand Diseases / Q000097:blood / Q000235:genetics / Q000276:immunology*
chemical_list: D000941:Antigens; D012310:Ristocetin; D005169:Factor VIII