inhibition studies with antibodies directed against human urokinase ( u-pa ) or tissue plasminogen activator ( t-pa ) revealed the presence of a plasminogen activator completely inhibitable by anti-t-pa igg in the vessel walls , while in collecting ducts the plasminogen activator activity was inhibited by anti-u-pa igg to only 80 % and by anti-t-pa igg to about 20 % .
C0086418
human
C0042071
u-pa