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To investigate the developmental changes of human erythrocytes, adult and fetal erythrocyte membranes prepared from adult and cord blood were analyzed in regard to their proteins, glycoproteins, enzyme activities and glucose transport systems. 1. Adult and fetal erythrocyte membranes appeared to have the same major proteins and gl-ycoproteins in the electrophoretic pattern. 2. ATPase activity in adult erythrocyte membranes was... |