1. Steinberger, E., Steinberger, A., and Ficher, M., Rec. Prog. Horm. Res., 26, 547 (1970).
2. Dyson, A. L. M. B., and Orgebin-Crist, M. C., Endocrinology, 93 (in the press).
3. Blaquier, J. A., Cameo, M. S., and Burgos, M. H., Endocrinology, 90, 839 (1972).
4. Ritzén, E. M., Dobbins, M. C., French, F. S., and Nayfeh, S. N., Excerpta Medica Int. Congress Series, abstract 200, 256, 79 (1972).
5. Hansson, V., Steroids, 20, 575 (1972).