👉 Extension blood cells, or erythrocytes, are oval-shaped and lack a nucleus, enabling them to flow freely through tiny capillaries. They're packed with hemoglobin, the protein that binds and transports oxygen from lungs to body tissues.
👉 Extension blood cells, or erythrocytes, are oval-shaped and lack a nucleus, enabling them to flow freely through tiny capillaries. They're packed with hemoglobin, the protein that binds and transports oxygen from lungs to body tissues.
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