Evidence for a sequential transfer of iron amongst ferritin, transferrin and transferrin receptor during duodenal absorption of iron in rat and human

Figure 6 Staining intensity of ferritin, transferrin and transferrin receptor in human duodenal biopsy under different iron nutritional status: Immunohistochemical localization of ferritin (Fe), transferrin (Tf) and transferrin receptor (TfR) in the duodenal biopsy sections of normal (top panel, N), iron deficient (middle panel, ID) and blood transfused (bottom panel, BT) human subjects. Staining intensity; ± represents Light, + normal, ++ good, +++ intense.