title: THE SIGNIFICANCE OF ABSENCE OF VALVES IN THE DEEP VEINS.
mesh_terms: D001808:Blood Vessels / Q000637:transplantation*; D000013:Congenital Abnormalities; D006801:Humans; D013924:Thrombophlebitis; D014656:Vascular Surgical Procedures; D014680:Veins
keywords: ABNORMALITIES; BLOOD VESSEL TRANSPLANTATION; THROMBOPHLEBITIS; VEINS