despite the drop in functional prekallikrein and kallikrein inhibitor , there was no change in factor xii clotting activity or antigenic concentrations of prekallikrein and the kallikrein inhibitors , c1 esterase inhibitor ( c1-inh ) and alpha ( 2 ) -macroglobulin .
C0022478
kallikrein
C0033024
prekallikrein