Factor XIIaFactor XIIFactor XIFactor XIaKaolinPrekallikreinKallikreinsComplement C1 Inactivator ProteinsReduviidaeKininogensBenzamidinesTrypsin InhibitorsChromogenic CompoundsFactor XI DeficiencyBlood CoagulationAntithrombin IIIalpha-2-AntiplasminPartial Thromboplastin TimeThrombinDextran SulfatePeptide FragmentsSerine Endopeptidases