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iron(Fe) (iŽәrn) a chemical element, atomic number 26, atomic weight 55.847. Iron is chiefly important to the human body because it is the main constituent of hemoglobin, cytochrome, and other components of respiratory enzyme systems. iron 59
a radioisotope of iron having a half-life of 44.5 days; used in ferrokinetics tests to determine the rate at which iron is
cleared from the plasma and incorporated in red blood cells. Symbol 59Fe. iron dextran
a complex of iron and dextran of low molecular weight; administered intravenously or intramuscularly as a hematinic. iron sucrose
a complex of ferric hydroxide, Fe(OH)3, in sucrose; used intravenously to treat iron deficiency anemia in hemodialysis patients receiving supplemental erythropoietin therapy.
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