[Electrophoresis of liver proteins from the rat under various physiological conditions].

The total protein and glycoprotein in electrophoretic patterns of rat liver endoplasmic reticulum we studied in peculiar physiological conditions as perinatal development, pregnancy and liver rigeneration. Previous work in these experimental systems showed a changed microsome lipid composition and modified activities of some ER membrane bound enzymes. The microsomes obtained from foetal and neonatal liver show a modified electrophoretic pattern of both total protein and glycoprotein of low weight with respect to the adult animal. As to the microsomes of 8h and 12h regenerating liver modifications are observed only in the pattern of glycoprotein in the molecular weight range.