title: Delayed fusion of amnion and chorion: a possible association with trisomy 21.
authors.forename: Z
authors.initials: Z
authors.lastname: Appelman
authors.forename: Y
authors.initials: Y
authors.lastname: Zalel
authors.forename: S
authors.initials: S
authors.lastname: Fried
authors.forename: B
authors.initials: B
authors.lastname: Caspi
mesh_terms: D000328:Adult; D000650:Amnion / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002823:Chorion / Q000002:abnormalities* / Q000000981:diagnostic imaging; D004314:Down Syndrome / Q000209:etiology*; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal