Hemoglobin is the protein in red blood cells that carries oxygen from the lungs to the tissues of the body, thus playing an important role in human body. The abnormal levels of hemoglobin, or abnormal types of hemoglobin can result into serious disease conditions.
The Hemoglobin protein functions by binding and transporting oxygen from the capillaries of the lungs to all of the tissues in the body. It also plays the important role in the transport of carbon dioxide from the tissues of the body back to the lungs.
Nitric oxide and carbon monoxide can also be able to bind with hemoglobin, with carbon monoxide binding much more readily than the oxygen molecules.
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