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. 2018 Jan 14;14(2):156–164. doi: 10.7150/ijbs.18334

Figure 3.

Figure 3

Immunofluorescent staining. (A--D) Receptor activator of nuclear factor-κB (RANK), (E-H) receptor activator of nuclear factor-κB ligand (RANKL), (I-L) osteoprotegerin (OPG), and (M-P) bone morphogenetic protein-2 (BMP2) expression levels in different regions of early stage osteonecrotic femoral heads. (A, E, I, M) Subchordral bone region. (B, F, J, N) Necrotic region. (C, G, K, Q) Sclerotic region. (D, H, L, P) Healthy region. White arrows in B and F indicate the expression of RANK and RANKL. Red arrows in K and O indicate the expression of OPG and BMP2.