1. Burstone, M. S., J. Hitochem. and Cytochem., 7, 112 (1959).
2. Burstone, M. S., ibid. (in the press).
3. Burstone, M. S., Amer. J. Clin. Path., 28, 429 (1957).
4. Cleland, K. W., and Slater, E. C., Quart. J. Micro. Sci., 94, 329 (1953).
5. Kisch, B., and Bardet, J. M., “The Electron Microscopic Histology of the Heart” (Brooklyn Medical Press, New York, 1951).