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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Fibrin clottings of blood in the vessels of the maternal pulmonary microcirculation. The arrows indicate fibrin clottings in pulmonary vessels (Hematoxylin and Eosin stain, ×100 magnification).