1. Bettelheim-Jevons, F. R., Advances in Protein Chem., 13, 35 (Academic Press, New York, 1958).
2. Werner, I., Acta Soc. Med. Upsaliensis, 58, 1 (1953).
3. Conchie, J., Findlay, J., and Levvy, G. A., Biochem. J., 71, 318 (1959).
4. Marsh, C. A., Alexander, F., and Levvy, G. A., Nature, 170, 163 (1952).