title: Closure of umbilical blood vessels.
mesh_terms: D000818:Animals; D001808:Blood Vessels / Q000187:drug effects*; D005260:Female; D006168:Guinea Pigs; D006801:Humans; D011247:Pregnancy; D011270:Pregnancy, Animal; D011817:Rabbits; D051381:Rats; D013566:Sympathomimetics / Q000494:pharmacology*; D014469:Umbilical Arteries; D014470:Umbilical Cord / Q000187:drug effects*; D014471:Umbilical Veins; D014662:Vasoconstrictor Agents / Q000494:pharmacology
chemical_list: D013566:Sympathomimetics; D014662:Vasoconstrictor Agents