1. Allen, M. J., 1967. Nucleic acid and protein synthesis in the dcveloping oocytes of the budding form of the syllid, Autolytus edwarsi. Biol. Bull. 133: 287–302.
2. Berlin, R. D. J. M. Oliver, 1975. Membrane transport of purine and pyrimidine bases and nucleosides in animal cells. Int. Rev. Cytol. 42: 287–336.
3. Bertout, M., F. Caner, A. Dhainaut J. Krembel, 1981. Development of the nuclear structure and metabolism during oogenesis of Perinereis cultrifera ( Annelida, Polychaeta). Int. J. Invert. Dev. 3: 493–498.
4. Brown, D. D. I. B. Dawid, 1968. Specific gene amplification in oocytes. Oocyte nuclei contain extrachromosomal replicas of the genes for ribosomal RNA. Science 160: 272–280.
5. Burridge, P. W., R. A. Woods J. F. Henderson, 1977. Purine metabolism in Saccharomyces cerevisiae. Can. J. Biochem. 55: 935–941.