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. 2021 Dec 10;8:790091. doi: 10.3389/fmolb.2021.790091

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Copyright © 2021 Jia, Zhang, Sun, Yuan and Zheng.

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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Analysis of differentially expressed proteins in saliva. (A) Blue spot indicates the downregulated differently expressed protein, while red spot indicates the upregulated. Black spot represents the proteins with no different expression. Volcano-plot with a 5% FDR and limit of ± 1.5 in fold change in difference of mean quantification. (B) Blue spot indicates the differently expressed protein in G group, while red spot indicates the P group. PCA plot of individuals with G and P groups based on the differentially expressed proteins showed a partial separation of the groups.