Increased fibrinolytic activity in the inflamed gingiva of beagle dogs.

The fibrinolytic activity originated by activation of plasminogen was found to be greater in the inflamed gingiva than in the normal gingiva. The activator of plasminogen present in the normal and inflamed gingiva of the beagle dog was demonstrated histochemically. Plasminogen activator was found adjacent to the crevicular epithelium and blood vessels.