Fig. 3

Postnatal findings: Baby B and placenta. a The left arm of baby B shows a constrictive ring (arrows) with a 1-cm skin defect (arrowhead). The amniotic bands are unidentifiable. b Gross examination of the placenta. A part of the dividing membrane is identifiable (arrows), but most of it is missing. c Histopathological examination of the amniotic membranes. There is a double amnion layer (arrows) without a chorion. Scale bar: 100 μm