Figure 5: Gross photograph (a) and TEM (b), (c) of an obstructed lymphatic vessel in 4 days. (a) LSMCs appeared conspicuously-enlarged distal to the ligated point. L, LSMC; A, artery; V, vein; arrow, valve. (b) Both endothelial cells and smooth muscle cells showed evidence of endocytotic activity (arrowheads). SM, LSMC; L, lumen; EC, endotherial cell; F, fibroblast; C, collagen. Original magnification × 3,000. (c) m, myofilament component; rER, rough endoplasmic reticulum; M, mitochondria; v, vesicles; F, fibroblast. Original magnification × 15,000.