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. 2018 Apr 14;2018(1):106–115. doi: 10.1093/emph/eoy011

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© The Author(s) 2018. Published by Oxford University Press on behalf of the Foundation for Evolution, Medicine, and Public Health.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Vascular anatomy of monochorionic, twin placenta. (A) Photograph of single, monochorionic placenta with dividing amnion tissue and two umbilical cords. (B) Diagrammatic representation of monochorionic twin placenta with vascular anastomoses (labelled 1-5). F and F₁ indicate umbilical cord of two twins. Taken from Strong and Corney [55]. Original image from Schatz [109]