1. Kiessling, K.-H., and Lindahl, P. E., Ark. Kemi, 4, 285 (1952).
2. Velluz, L., Amiard, G., and Bartos, J., J. Biol. Chem., 180, 1137 (1949).
3. Rossi-Fanelli, A., Siliprandi, N., and Fasella, P., Science, 116, 711 (1952).
4. Sperber, E., and Renvall, S., Biochem. Z., 310, 160 (1941).
5. Kiessling, K.-H., and Lindahl, G., Ark. Kemi, 6, 271 (1953).