Research Article

The Expression of Osteopontin and Wnt5a in Articular Cartilage of Patients with Knee Osteoarthritis and Its Correlation with Disease Severity

Figure 1

Histology and immunohistochemistry analysis. The first and second lines of images presented histological characteristics of the OA cartilage by HE staining and safranin-O staining, respectively. The third and fourth lines of images presented OPN and Wnt5a immunohistochemical staining, respectively. (a) In normal cartilage; (b) in minor lesions cartilage; (c) in moderate lesions cartilage; (d) in severe lesions cartilage.
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