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Figure 3 | BMC Bioinformatics

Figure 3

From: Metabonomics evaluations of age-related changes in the urinary compositions of male Sprague Dawley rats and effects of data normalization methods on statistical and quantitative analysis

Figure 3

PCA scores and loadings normalized to weight. (A) 2D PCA scores and loadings plots of NMR data renormalized by animal weight from urine samples of 25-day (red circles), 40-day (blue circles), and 80-day (yellow circles) old control SD rats at all timepoints. (B) The PC1 and PC2 loadings for the negative NMR PCA analysis.

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