Figure 3: Concentrations of serum iron (Fe) μmol/L in group (control) (n=40: 22 M/18 W) and two groups of anemic subjects: Group 2 to iron deficiency anemia (IDA) (n=30: 11 M/19 W); Group 3: anemia of chronic disease (ACD) (n=60: 36 M/24 W).