Fig. 4From: Role of circulating endothelial progenitors in responsiveness to erythropoiesis-stimulating agents in hemodialysis patientsDistribution of subjects according to log CD133/Flk1+ EPC in iron status subgroups. Distributions of subjects according to log CD133/Flk1+ EPC levels in subgroup with iron deficiency (n = 24) and subgroup without iron deficiency (n = 77) were similar by Mann–Whitney U test (p = 0.473). Iron deficiency status was defined as TSAT < 20% and ferritin < 100 ng/mlBack to article page