Anemia robustly increased expression of transferrin-a (tfa), solute carrier family 40 member 1 (slc40a1 or fpn1), and transferrin receptor 2 (tfr2), reflecting activation of an iron-mobilization response to meet erythropoietic demand (p < 0.05, Figure 3). This evidence concerns the gene TFR2 and anemia (phenotype).