[Electrophoretic study of the membrane proteins of erythrocytes of different ages].

Alterations in membrane proteins of erythrocytes were studied by means of polyacrylamide gel electrophoresis in presence of sodium dodecylsulphate during maturation of the blood cells in an organism, in long-term storage of blood and under conditions of incubation of the erythrocyte shadows in autoplasm. Under the conditions studied the main membrane polypeptides of erythrocytes were shown to be stable. At the same time, maturation of erythrocytes was accompanied by quantitative alterations in some peripheric polypeptides due to interconnected reactions loss of some membrane proteins and their absorption from blood plasma.