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Fig. 2 | Frontiers in Zoology

Fig. 2

From: Metabolic responses of plasma to extreme environments in overwintering Tibetan frogs Nanorana parkeri: a metabolome integrated analysis

Fig. 2

Principal component analysis (PCA) score plots, the orthogonal projection to latent structures discriminant analysis (OPLS-DA) scores plots, and permutation tests for plasma metabolites in positive ion mode (a, c, e) and negative ion mode (b, d, f). Three groups are distinguished: summer-collected frogs, blue; winter-collected frogs, red; and Quality Control (QC) samples, purple

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Frontiers in Zoology

ISSN: 1742-9994