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Figure 1 Comparison of TN-C expression in the control saphenous vein, patent and occluded vein graft. (A) TN-C was strongly expressed around the muscle bundles in the adventitia (a) and media (m) of the patent vein graft (red), but not in the neointima (n). Inset shows higher magnification of the adventitia and media. (B) TN-C either was not detected or was weakly expressed in occluded graft segments. (C) Lack of detectable expression of TN-C in control veins. Magnifications: A and B, 10x C, 30x, reduced by 65%.