Fig. 1From: Effects of erythropoietin for precaution of steroid-induced femoral head necrosis in ratsRepresentative optical images of HE stained femoral head bone slices from rats in negative control group (a and b), disease group (c and d), and EPO group (e and f). Magnification 100× for (a, c and e) (scale bars 100 μm), and 250× for (b, d, and f) (scale bars 50 μm)Back to article page