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. 2021 Nov 11;9:777224. doi: 10.3389/fcell.2021.777224

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Copyright © 2021 Huang, Hong, Wu, Chen, Kong, Ruan, Teng and Wei.

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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Boxplots of Raman band integration of successful pregnancy group and failed pregnancy group in PCOS. The significant differences at 993–1,165 cm⁻¹ (A) and 1,439–1,678 cm⁻¹ (B) were shown between the two groups in PCOS. The rectangle in the box plots represents the second and the third quartiles, with the line inside representing the median. The lower and upper quartiles are drawn as lines outside the box. Sample means were compared by Welch 2-sample t test for unequal variances. ^*** indicates p < 0.001.