Scatterplots of oral iron incorporation versus hepcidin. (A) Serum hepcidin measured on day 1 is plotted against incorporation of ⁵⁷Fe (which was administered on day 1). (B) Serum hepcidin measured on day 15 is plotted against incorporation of ⁵⁸Fe (which was administered on day 15). ● indicates children admitted into the study with postmalarial anemia; and ○, children admitted into the study with nonmalarial anemia. Line depicts best-fit regression.