Haemoglobin Scholarly Peer-review Journal

 Hemoglobin is the protein molecule in red blood cells that brings oxygen from the lungs to the tissues of the body, and returns carbon dioxide to the lungs from the tissues. Hemoglobin is composed of four associated protein molecules (globulin chains). The normal molecule for adult hemoglobin (Hbg) contains two chains of alpha-globulin and two chains of beta-globulin. Beta chains are not common in fetuses and infants, and the molecule of hemoglobin is composed of two alpha chains and two gamma chains. In the blood.   When the infant develops, the gamma chains are slowly replaced by beta chains which form the structure of the adult hemoglobin. Each globulin chain contains an essential central structure called the heme molecule. The iron that is vital for the transport of oxygen and carbon dioxide is embedded within the heme molecule

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