1. R.D. Allen and N.S. Allen, Protoplasma 109: 209 (1981).
2. E.N. Brewer and A. Prior, Phy. Newsletter 8: 45 (1976).
3. D.E.S. Brown and D.A. Marsland, J. Cell Comp. Physiol. 8:159 (1936).
4. R. Chambers and E.L. Chambers, “Explorations into the Nature of the Living Cell”, (Harvard Univ. Press, Cambridge, MA, 1961 ).
5. J.A. Cooper and T.D. Pollard, Methods in Enzymology in press (1982).