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Dichorionic/diamniotic placenta: (1) placenta of fetus 1, (2) placenta of fetus 2; dividing membrane (yellow dashed line); vessels from umbilical cord of fetus 1 that anastomose with vessels of the placenta of fetus 2 (yellow arrows); vascular anastomoses between the placentae (black lines) and long vessel without Wharton substance (arrowhead).
