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. 2022 Jan 28;13:822193. doi: 10.3389/fphar.2022.822193

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Copyright © 2022 He, Zhang, Li, Tan, Zhang, Ou, Huang, Wu and Wang.

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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OPLS-DA score plots of rat urine in control group and model group (A) positive ion pattern; (B) negative ion pattern. VIP scatter plots of rat urine in control group and model group. (C) positive ion pattern; (D) negative ion pattern.