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Score plots of PCA (left) and multilevel PCA (right) of the analyzed metabolites (A), peptides (B), and inflammation biomarkers (C). Explained variances of the first two principal components (PC1 and PC2) are given. The abbreviations Lowxg, B6h0C, B6hRT, P24h4C, and P24hRT represent a low centrifugation force (1300g), blood incubation at 0 °C for 6 h, blood incubation at RT for 6 h, plasma incubation at 4 °C for 24 h, and plasma incubation at RT for 24 h, respectively.
