STUDIES ON A PROTEOLYTIC ENZYME IN HUMAN PLASMA : I. THE PROBABLE IDENTITY OF THE ENZYMES ACTIVATED BY CHLOROFORM AND BY FILTRATES OF CULTURES OF BETA HEMOLYTIC STREPTOCOCCI

1. The experiments reported suggest that the plasma proteolytic enzyme activated by streptococcal fibrinolysin is identical with that activated by chloroform.

2. The precursor of this plasma proteolytic enzyme is precipitated with the euglobulin fraction of plasma at pH 5.2.