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. 2019 Apr 5;10:334. doi: 10.3389/fphar.2019.00334

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Copyright © 2019 Rauca, Vlase, Casian, Sesarman, Gheldiu, Mocan, Banciu and Toiu.

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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Score scatter plot of the OPLS-DA model (R2Y-99.8% and Q2-99.5%) – t(1) – first predictive component vs. t(2) – second predictive component. Each observation is represented by a point in multidimensional space, differentially colored according to plant species. EEAG, A. genevensis ethanolic extract; EEAC, A. chamaepitys ethanolic extract; EEAL, A. laxmannii ethanolic extract. R2X-fraction of variability in X (physicochemical descriptors) explained by each component; R2Y-total variation of Y (class membership) explained by the model; Q2-predictive capacity.