Expression of hexose transport proteins in erythrocytes. For immunoblotting, total erythrocyte membrane proteins were loaded on each lane of a sodium dodecyl sulfate-containing polyacrylamide gel, electrophoresed, transferred to Immobilon, reacted with the different anti-GLUT antibodies, and visualized using horseradish peroxidase antirabbit IgG and enhanced chemiluminescence. Sizes on the left are kD.