title: Degenerative changes in autologous saphenous veins used as arterial bypass grafts.
mesh_terms: D000368:Aged; D001161:Arteriosclerosis / Q000150:complications / Q000473:pathology; D001166:Arteriovenous Shunt, Surgical / Q000379:methods*; D001706:Biopsy; D005260:Female; D005263:Femoral Artery / Q000601:surgery*; D006801:Humans; D007383:Intermittent Claudication; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000601:surgery*; D011183:Postoperative Complications; D012501:Saphenous Vein / Q000637:transplantation*; D013924:Thrombophlebitis; D013927:Thrombosis; D014182:Transplantation, Autologous; D014652:Vascular Diseases / Q000601:surgery