[The seasonal dynamics of the adenine nucleotide level in the liver mitochondria of the frog Rana temporaria].

ATP, ADP and AMP content of liver mitochondria has been determined in frogs immediately after isolation during autumn, winter and spring periods. Seasonal changes in adenine nucleotides in frogs are similar to those observed in rat liver mitochondria during early postnatal ontogenesis. It is suggested that in frogs seasonal changes in liver intramitochondrial adenine nucleotides depend on the hormonal condition of animals.