title: Surgical preparation of a chronic maternal-fetal model in pregnant sheep: a technique for the measurement of middle uterine blood flow, umbilical blood flow, and fetal sampling in the awake sheep.
mesh_terms: D000818:Animals; D001783:Blood Flow Velocity; D002245:Carbon Dioxide / Q000097:blood; D002404:Catheterization; D005260:Female; D005263:Femoral Artery; D005333:Fetus; D006863:Hydrogen-Ion Concentration; D008431:Maternal-Fetal Exchange; D008722:Methods; D008954:Models, Biological; D010100:Oxygen / Q000097:blood; D011247:Pregnancy; D012039:Regional Blood Flow; D012756:Sheep; D014469:Umbilical Arteries; D014471:Umbilical Veins; D014599:Uterus / Q000098:blood supply
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen