leupeptin , alpha-1-antitrypsin , alpha-2-macroglobulin and hamster serum containing acute phase proteins were capable of inhibiting fibrinolysis in vitro , were not toxic to the cells and their action was reversible , while rejection of a mixture of protease inhibitor and transformed cells resulted in delayed tumour development .
C0002191
alpha-1-antitrypsin
C0001347
acute phase proteins