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. 2023 Mar 22;14:1084332. doi: 10.3389/fphys.2023.1084332

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Copyright © 2023 Zhang, Shen, Yang, Sun, Tang, Liang, Ma, Wu, Cao, Wu, Ding, Li, Liu and Ge.

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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Anatomical and histological characteristics of PPs. (A) The anatomical characteristics of PPs observed by the naked eye. (B) Quantity statistics of JPPs. (C) The histological characteristics of PPs (1: villus lamina propria; 2: epithelial layer; 3: subepithelial dome area; 4: follicular area; 5: interfollicular area and 6: muscle layer); scale bar: 100 μm. (D) Quantitative analysis of the area and diameter of GC in PPs. Means ± SDs are presented for each group. n = 3. ^*** p < 0.001.