1. Ames, B. N. and Dubin, D. T. (1960)J. Biol. Chem.,235, 769.
2. Balinsky, B. I. (1969)Zool Afr.,4, 37.
3. Berry, P. Y. (1964)J. Anim. Ecol.,33, 227.
4. Bjersing, L. (1977) inOvary (eds L. Zuckerman and B. J. Weir) (New York: Acadefc Press) Vol. 1, p. 303.
5. Bonting, S. L. (1970) inMembranes and Ion Transport (ed. E. E. Bittar) (New York: Wiley Interscience) Vol. 1,p.257.