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. 2021 Jan 10;12(5):1563–1574. doi: 10.7150/jca.54252

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Metabolomics characteristics of cervical epithelial tissues. PCA and PLS-DA completely separated cervical precancerous lesions (HSIL and LSIL) from normal cervical epithelial tissues (N, Normal) and cervical cancer tissues (SCC) (A and B). Levels of several key metabolites in different cervical tissues were detected by GC-MS (C). LSIL, low-grade squamous intraepithelial lesions; HSIL, high-grade squamous intraepithelial lesions. *P < 0.05 vs Normal and **P < 0.01 vs Normal.