Kunitz, M FORMATION OF TRYPSIN FROM TRYPSINOGEN BY AN ENZYME PRODUCED BY A MOLD OF THE GENUS PENICILLIUM. [electronic resource] - The Journal of general physiology May 1938 - 601-20 p. digital Publication Type: Journal Article ISSN: 0022-1295 Standard No.: 10.1085/jgp.21.5.601 doi