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. 2017 Sep 13;16(5):6828–6836. doi: 10.3892/mmr.2017.7493

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Copyright: © Liu et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 2. — Multivariate data analysis based on serum spectral data of UPLC-QTOFMS positive ion mode. (A) Principal component analysis score map derived from UPLC-QTOFMS spectra containing H0, H1 and HPC groups. (B) Partial least squares-discriminant analysis score map derived from UPLC-QTOFMS spectra containing H0, H1 and HPC groups. (C) Validation plot obtained from 99 permutation tests. UPLC-QTOFMS, ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry; H0, normoxic control; H1, acute hypoxic; HPC, acute repetitive hypoxia.