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. 2018 Oct 15;32(1):1–17. doi: 10.1293/tox.2018-0042

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©2019 The Japanese Society of Toxicologic Pathology

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: https://creativecommons.org/licenses/by-nc-nd/4.0/）.

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Fig. 4. — Morphological development of the rat placenta and histological events at each point. BZ, Basal zone; GC, Glycogen cell; ICM, Inner cell mass; LZ, Labyrinth zone; MG, Metrial gland; Tb, Trophoblast; YS, Yolk sac. HE stain.