GSTM1 and anemia: Decreased TS, Hb, hematocrit, MCH, MCV and RBC as well as increased reticulocyte count in both Iron/DSS and Control/DSS mice (Fig. 1D; Table 2) were consistent with the presence of microcytic, hypochromic iron deficiency anemia and increased erythropoietic activity in the bone marrow of DSS-treated mice.