11.   Also with respect to tissue type plasminogen activator, antigen and activity were in general significantly correlated in carcinomas and normal mucosa.

12.   Oesophageal tissue was found to contain significantly less urokinase type plasminogen activator and tissue type plasminogen activator, both in antigen and activity, compared with stomach tissue.

13.   Plasminogen activator inhibitors also control the activity of both tissue type plasminogen activator and urokinase type plasminogen activator by forming inactive inhibitor enzyme complexes.