[Umbilical ansa and its vessels in a 17 mm human embryo].
D006801:Humans; D007422:Intestines / Q000196:embryology*; D008638:Mesenteric Arteries / Q000196:embryology*; D008642:Mesenteric Veins / Q000196:embryology*
L'anse ombilicale et ses vaisseaux chez un embryon humain de 17 mm.