Figure 9From: Interpositional substitution of free vas deferens segment autografts in rat: feasibility and potential implications Transverse section through a vas autograft 1 month after surgery showing severe degenerative changes. The rounded lumen (l) exhibits an increased presence of spermatozoa (s), and smooth muscle (arrow heads) layers are largely replaced by fibrous tissue (f) surrounded by a revascularizing, thickened adventitia (arrows) 55x.Back to article page