define hemoglobin. where it present?
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Hemoglobin, also spelled haemoglobin, iron-containing protein in the blood of many animals—in the red blood cells (erythrocytes) of vertebrates—that transports oxygen to the tissues. Hemoglobin forms an unstable reversible bond with oxygen
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Hemoglobin is a protein found in red blood cells. It gives blood its red color, and its job is to carry oxygen throughout our body.
About 70 percent of your body's iron is found in the red blood cells of our blood called hemoglobin and in muscle cells called myoglobin. Hemoglobin is essential for transferring oxygen in our blood from the lungs to the tissues.
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