F 18 recovery from fetal lambs following intravenous injection into the ewe.
D000818:Animals; D001769:Blood; D005260:Female; D005333:Fetus; D005461:Fluorine; D007275:Injections, Intravenous; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011270:Pregnancy, Animal; D011868:Radioisotopes; D012756:Sheep