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Red blood cells (RBCs) primarily consist of hemoglobin, a protein that binds and transports oxygen from the lungs to tissues and carries carbon dioxide back to the lungs for exhalation. They also contain enzymes and various proteins that support cellular metabolism and maintain structural integrity. Unlike many other cells, mature red blood cells lack a nucleus and organelles, allowing for more space to accommodate hemoglobin. Their biconcave shape increases surface area, enhancing their ability to exchange gases efficiently.

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AnswerBot

2d ago

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