[Glycogen content and glucose-6-phosphatase activity in the tissues of the adult frog and tadpole].

Studies have been made on the content of glycogen and the activity of glucose-6-phosphatase in tissues of adult frog Rana temporaria (liver, brain, pia mater, n. ischiadicus, fast and slow muscles) and tadpoles (liver, tail muscles). It was found that the enzymic activity is somewhat higher in the liver of tadpoles than that in the liver of adult frogs, being low in the tail muscles. Pia mater and n. ischiadicus exhibit higher activity of glucose-6-phosphatase as compared to the liver. In tadpoles, glycogen content of the liver increases from the 40th stage of metamorphosis and decreases in the tail muscles to the 42nd-50th stages. Glycogen content in tissues other than liver of adult frogs is higher than in similar tissues of mammals.