1. THE ACTIVATION OF CHYMOTRYPSINOGEN
2. Green, N. M., and Neurath, H., in Neurath, H., and Bailey, K., The proteins, New York, 2, chapter 25 (1954).
3. THE RAPID ACTIVATION OF CHYMOTRYPSINOGEN
4. Northrop, J. H., Kunitz, M., and Herriott, R. M., Crystalline enzymes, New York, 2nd edition (1948).