1. Cabib, E., and Roberts, R., A. Rev. Biochem.51 (1982) 763.
2. Mitchison, J. M., Meth. Cell Physiol.4 (1970) 131.
3. Beach, D., Durkacz, B., and Nurse, P., Nature300 (1982) 706.
4. Johnson, B. F., Calleja, G. B., and Yoo, B. Y., in: Eucaryotic Microbes as Model Developmental Systems, p. 212. Eds D. H. O'Day and P. A. Horgen. Mareel Dekker, New York 1977.
5. Egel, R., Kohli, J., Thuriaux, P., and Wolf, K., A. Dev. Genet.14 (1980) 77.