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. 2019 Oct 14;9(10):796. doi: 10.3390/ani9100796

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© 2019 by the authors.

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 (http://creativecommons.org/licenses/by/4.0/).

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Average numbers of capillary per mm² placenta tissues and vascular endothelial growth factor (VEGF)A mRNA expressions in placenta tissue of different backfat thickness sows. (A) placenta tissue slices. (B) to quantify villous capillary density. (C) VEGFA mRNA expressions. Each group had 10–12 sows, and 4–5 placenta samples were analyzed per sow, mean ± SEM. Different letter showed significant difference (p < 0.05). The arrows indicate the placental vessels in stroma (200× magnification).