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

Figure 2 Reciprocal relationship between luminal transferrin and mucosal ferritin. A: Luminal and mucosal proteins collected after oral administration of ⁵⁹Fe after various time intervals were subjected to immunoprecipitation with ferritin and transferrin antibodies. The bar graph represents percentage incorporation of ⁵⁹Fe in luminal transferrin (crossed bars) and mucosal ferritin (open bars) of duodenum; B: Percentage of ferritin bound iron out of total protein bound iron with time, in various iron status conditions.