noun🔗ShareThe iron-containing substance in red blood cells that transports oxygen from the lungs to the rest of the body; it consists of a protein (globulin), and haem (a porphyrin ring with an atom of iron at its centre)."My grandpa, who has low hemoglobin, needs to eat more iron-rich foods to improve his oxygen levels. "medicinephysiologybiochemistryanatomybiologybodyorgansubstanceChat with AIVocabulary GamePractice Reading
