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. 2023 Aug 2;19(8):69. doi: 10.1007/s11306-023-02034-6

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Fig. 1 — Results of PCA on LC-MS metabolomics data collected from 336 microdialysis samples. a) 3D scores plot of the first three components with samples shaded according to acute MDMA dose (baseline [BL; green], 0.0 [blue], 5.0 [yellow], 10.0 [red] mg/kg). Ellipse/sphere represents Hotelling T2 (95%). b) Histogram showing variable loadings for component 3 as a function of retention time. R²X values of each component are shown at the bottom of each graph