Fig. 3From: Comparative analysis of gene expression profiles in normal hip human cartilage and cartilage from patients with necrosis of the femoral headImmunohistochemistry results for P4HA2 (a), SPP1 (b) and CRTAC1 (c) proteins in cartilage from patients with necrosis of the femoral head (NFH) and normal hip cartilage. Original magnification × 400 of the superficial zone (SZ), middle zone (MZ) and deep zone (DZ). The expression of the P4HA2, SPP1 and CRTAC1 proteins in cartilage from patients with NFH was significantly higher than in normal hip cartilage in the SZ, MZ and DZ: n = 6 in each group. *P values <0.05; &P values <0.001Back to article page