An immature form of these cells expresses CD71 on their surface. The function of these non-kidney cells depends on AE1, which exchanges chloride and bicarbonate ions. Reticulocytes (10[1])must undergo organelle expulsion before maturing into these cells. These cells can release ATP when subject to vigorous flow. Decreasing carbon dioxide concentration greatly increases the efficiency of these cells according to the Bohr effect. (-5[1])These cells assume a biconcave disk shape (10[3])to (10[1])allow for a high surface-area-to-volume (10[1])ratio to facilitate the diffusion of gasses. For 10 points, name these hemoglobin-rich cells (10[1])that transport oxygen to tissues through the (10[1])circulatory system. ■END■ (10[1])