Fig. 1From: Impairment of circulating endothelial progenitor cells (EPCs) in patients with glucocorticoid-induced avascular necrosis of the femoral head and changes of EPCs after glucocorticoid treatment in vitroCharacterization of human EPCs. a–c EPCs stained positively for DiI-ac-LDL (a) and FITC-UEA-1 (b). c Merged. d–f EPCs stained positively for CD133 (d) and CD34 (e). f MergedBack to article page