Spiral arterial structures in the fetal placenta.
D001158:Arteries / Q000033:anatomy & histology*; D002319:Cardiovascular System; D005260:Female; D005333:Fetus; D006801:Humans; D010920:Placenta / Q000098:blood supply*; D011247:Pregnancy
ARTERIES/anatomy and histology; PLACENTA/blood supply