[Changes in the ultrasonic picture of the placenta with advancing pregnancy].
D005260:Female; D006801:Humans; D010920:Placenta / Q000033:anatomy & histology*; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D011296:Prenatal Diagnosis / Q000379:methods*; D014463:Ultrasonography
Promeni v ultrazvukoviia obraz na platsentata s napredvane na bremennostta.