Fig. 2From: Effects of erythropoietin for precaution of steroid-induced femoral head necrosis in ratsRepresentative optical images of immunohistochemical femoral head bone slice from rats (a, b and c) in negative control group (a), disease group (b), and EPO group (c); and the expression of CD31 in the femoral head bone determined from immunohistochemistry (d). Scale bar: 50 μm. * for p < 0.05, and ** for p < 0.01Back to article page