An erothrocyte contains a red pigment called , which allows this cell to carry oxygen to the other cells of the body.

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anonymous · Answer

I believe it's Hemoglobin. Also called a red blood cell (RBC). The reddish color is due to the hemoglobin. Erythrocytes are biconcave in shape, which increases the cell's surface area and facilitates the diffusion of oxygen and carbon dioxide. This shape is maintained by a cytoskeleton composed of several proteins. Erythrocytes are very flexible and change shape when flowing through capillaries.