Figure 1.

3G5, von Willebrand factor (vWF), and alpha smooth muscle actin (αSMA) staining in the infrapatellar fat pad (IPFP) tissue vasculature. 3G5 (a, b) staining predominantly the tunica adventitia consisting of supporting tissue in the vasculature, vWF (c, d) staining predominantly the tunica intima consisting of the endothelial layer and the basement membrane, and αSMA (e, f) staining predominantly the tunica media consisting of the muscular layer of the arteriole are shown at × 10 (left panels) and × 40 (right panels) magnifications in the IPFP tissue.