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Fig. 1 | European Journal of Medical Research

Fig. 1

From: Lysophospholipids and branched chain amino acids are associated with aging: a metabolomics-based study of Chinese adults

Fig. 1

A Individual plot of PCA between old and young groups. Samples of two groups show a clear distinction in the PCA of the first two dimensions. The percentage on the X/Y axis refers to the ratio of inter-group differences explained by the first two principal components, respectively. B OPLS-DA scores plot of metabolites from old and young groups. C Volcano plot of metabolites with FC (fold change) > 1.5 or < 1/1.5, and p value < 0.05 in T test. Of them 11 are up-regulated and 23 are down-regulated in older adults. D Heatmap of standardized content of 80 differential metabolites from old and young groups. White represents that the average value of metabolite content is 0. The bar below shows the value in color, which means how many standard deviations from the mean value

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