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