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خرید پکیج
تعداد آیتم قابل مشاهده باقیمانده : 3 مورد
نسخه الکترونیک
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Circumvallate placenta and cord

Circumvallate placenta and cord
A double layer of amnion and chorion, as well as necrotic villi and fibrin, form a raised white ring around the surface of the placental disk at a variable distance from the umbilical cord insertion site; the fetal vessels do not extend beyond this ring. The extrachorionic tissue constitutes a small proportion of the placenta and usually does not compromise fetomaternal exchange.
Courtesy of Drucilla J Roberts, MD.
Graphic 121048 Version 1.0

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