1. Pozzi, L., Mem. Accad. Italia, 6, 193 (1935).
2. Eder, H., Bradley, H. C., and Belfer, S., J. Biol. Chem., 128, 551 (1939).
3. Berenbom, M., Chang, P. I., Betz, H. E., and Stowell, R. E., Cancer Res., 15, 1 (1955).
4. de Duve, C., and Beaufay, H., Biochem. J., 73, 610 (1959).
5. de Duve, C., in Subcellular Particles, edit. by Hayashi, T., 128 (Ronald Press, New York, 1959).