[On the demonstration of venous valves in the portal system of rodents].
D002319:Cardiovascular System; D006801:Humans; D008642:Mesenteric Veins; D011168:Portal System; D011169:Portal Vein; D012377:Rodentia; D013162:Splenic Vein; D055422:Venous Valves
MESENTERIC VEINS; PORTAL VEIN; RODENTS; SPLENIC VEIN