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. 2019 Jul 1;17:50. doi: 10.1186/s12958-019-0494-7

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Validation by RT-qPCR for selected genes from first-trimester placentas derived from IVF-ET compared with those derived from the control group. The mRNA levels of AFP, GCM1, LAIR2, PTEN, BCL2, TF, MT1M, EGFR, VEGF, and TUBB1 in the IVF-ET and control groups were examined by RT-qPCR. All data are expressed as the mean ± standard deviation, * indicates P < 0.05; ** indicates P < 0.01