Iron is a component of the protein, hemoglobin that binds and transports oxygen in the bloodstream.
hemoglobin is a protein that is present in the bloodstream. Its function is to carry oxygen from the lungs to the cells of the body and also to bring carbon dioxide to the lungs, where it will be expelled.
Hemoglobin is a protein substance present inside red blood cells in the blood, known as erythrocytes. Its main objective is to transport the oxygen captured by the lungs to all the other cells in our body.
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