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NELL-1 expression in chondrosarcoma. (a–d) Appearance of H&E staining and NELL-1 immunohistochemical staining in chondrosarcoma, grade I. (e–h) Appearance of H&E staining and NELL-1 immunohistochemical staining in chondrosarcoma, grade II. (i–l) Appearance of H&E staining and NELL-1 immunohistochemical staining in chondrosarcoma, grade III. Scale bar: 100 μm.
