2 ) human endothelial cell-type plasminogen activator inhibitor ( pai-1 ) , pretreated with 12 m urea , was added to this fraction ( 22 micrograms of pai-1/ml of plasma ) , and a pai-1 antigen peak with apparent mass 450 kda ( representing 65 % of pai-1 antigen and 85 % of pai activity ) was isolated by gel filtration of this mixture .
C0030190
endothelial
C0032145
pai-1