1. N. D. Belyaev, L. V. Derii, I. A. Smolenskaya, and V. M. Subbotin, Dokl. Akad. Nauk SSSR,306, No. 2, 496 (1989).
2. A. S. Loginov and Yu. E. Blok, Chronic Hepatitis and Cirrhosis of the Liver [in Russian], Moscow (1987).
3. N. A. Setkov, V. N. Kazakov, and T. V. Andreeva, Tsitologiya (1991).
4. C. C. Denielsen, Mech. Ageing Develop.,40, No. 1, 9 (1987).
5. M. Lieberman, Biochem. Biophys. Res. Commun.,120, 891 (1984).