Catheterization of the common umbilical vein for chronic fetal lamb studies.
D000818:Animals; D001800:Blood Specimen Collection / Q000379:methods*; D002404:Catheterization / Q000009:adverse effects / Q000379:methods*; D005260:Female; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D012756:Sheep; D014471:Umbilical Veins