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. 2022 Nov 24;13:982518. doi: 10.3389/fimmu.2022.982518

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Copyright © 2022 Radwan, Tarnowska, Piekarska, Wiśniewski, Krasiński, Radwan and Nowak

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Quality of the embryos depending on the day of development. 1) development of embryos over time from the second to the sixth day (height of the colored stripes); 2) comparisons of secretion between embryos of different classes or stages of development (vertical clamps). A, B, C – class of the embryo; M – embryo in the morula stage; no-M – embryo that has not reached the morula stage; BC – embryo in the blastocyst stage; no-BC – embryo that has not reached the blastocyst stage. Median concentration of sHLA-G was presented in brackets. P-values are calculated by Mann-Whitney test.