[Echographic visualisation of the umbilical vesicle and the amniotic membrane (author's transl)].
D000650:Amnion; D005260:Female; D006801:Humans; D011247:Pregnancy; D011258:Pregnancy Tests; D011261:Pregnancy Trimester, First; D011272:Pregnancy, Multiple; D014465:Ultrasonics; D014472:Umbilicus
Visualisation échographique de la vésicule ombilicale et de la membrane amniotique.