Kast, A., Nishikawa, J., Yabe, T., Nanri, H., and Albert, H. (1988). Circadian rhythm of liver parameters (cellular structures, mitotic activity, glycogen and lipids in liver and serum) during three consecutive cycles in phenobarbitaltreated rats. Chronobiol. Int. 5, 363–385. Please send to: [email protected] /* */ Thank you very much