Fig. 1From: The protective mechanism of SIRT1 on cartilage through regulation of LEF-1A Staining results of safranin O fast green in human tibial plateau specimens, 50x, scale bar = 500 μm; B Hematoxylin–Eosin staining experiment results, 50x, scale bar = 500 μm; C SIRT-1 immunohistochemistry test results, 100x, scale bar = 200 μm, (****P < 0.0001)Back to article page