title: Identity of contact activation cofactor and Fitzgerald factor.
mesh_terms: D001681:Biological Assay; D001769:Blood; D001779:Blood Coagulation Factors / Q000032:analysis*; D002848:Chromatography, DEAE-Cellulose; D005172:Factor XI / Q000032:analysis* / Q000378:metabolism; D005174:Factor XII / Q000032:analysis* / Q000378:metabolism; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007437:Intrinsic Factor / Q000032:analysis
chemical_list: D001779:Blood Coagulation Factors; D005174:Factor XII; D007437:Intrinsic Factor; D005172:Factor XI