there was no evidence that the rapid initial kinin release in plasma from allergic patients caused by submaximum concentrations of hog pancreas kalikrein or by acetone-activated human plasma ( 2 ) was due to an increased level of prekallikrein activator ( activated factor xii ) , to prekallikrein itself or to a factor possibly positioned between active factor xii and prekallikrein .
C0015527
activated factor xii
C0015525
factor