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heme vs. hemoglobin

[ heem ]
  1. a deep-red iron-containing blood pigment, C34H32N4O4Fe, obtained from hemoglobin.
[ hee-muh-gloh-bin, hem-uh- ]
  1. the oxygen-carrying pigment of red blood cells that gives them their red color and serves to convey oxygen to the tissues: occurs in reduced form (deoxyhemoglobin ) in venous blood and in combination with oxygen (oxyhemoglobin ) in arterial blood. Symbol: Hb

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