[The enzymes of fructose metabolism in the liver of chick embryos]. / Fermenty obmena fruktozy v pecheni zarodyshei kur.

The activity of fructose cycle enzymes remains practically constant in chick embryonic liver during ontogenesis. Change in ratio of aldolase A to B activities was detected. It is suggested that fructose enters the cycle via the sorbitol pathway in which aldose reductase and sorbitol dehydrogenase are involved.

[The activity of alpha-ketoglutarate dehydrogenase and succinate dehydrogenase in the liver of the developing chick embryo. The relation to the rate of the tricarboxylic acid cycle]. / Aktivnost' al'fa-ketoglutaratdegidrogenazy i suktsinatdegidrogenazy v pecheni razvivaiushchegosia zarodysha kuritsy. Sviaz' so skorost'iu tsikla trikarbonovykh kislot.

Succinate dehydrogenase and alpha-ketoglutarate dehydrogenase activities were determined in the liver of chick embryos and one and two day old chickens. The succinate dehydrogenase activity remained unchanged throughout development. The alpha-ketoglutarate dehydrogenase activity decreased by the end of embryogenesis and increased after hatching. The alpha-ketoglutarate dehydrogenase activity as an index of rate of the tricarboxylic acid cycle is discussed.