The erythropoietic effects of GSK360A are attenuated in ISAM mice. (A) A scheme of daily injection of GSK360A for 5 days. ISAM mice treated with C.E.R.A. were analyzed as positive controls, in which erythropoiesis was induced. (B) The number of erythrocytes, hemoglobin, hematocrit, and MCV were analyzed 2 days after the final injection of GSK360A. ∗P < .05 or ∗∗P < .01 calculated by Student t test (control) or Tukey-Kramer test (ISAM).