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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Partial least-squares discriminant analysis (PLS-DA). PLSDA plot showing the distribution of metabolite profiles between (A) RRMS and HS and (B) PPMS and HS for the X and Y matrices.