1. Comandon, J., and de Fonbrune, P., CR Soc. Biol., 131, 744 (1939).
2. Lorch, I. J., and Danielli, J. F., Quart. J. Microsc. Sci., 94, 461 (1953).
3. Goldstein, L., in Methods in Cell Physiology (edit. by Prescott, D. M.), 1, 97 (Academic Press, New York, 1964).
4. Jeon, K. W., Exp. Cell Res., 46, 609 (1967).