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Identification of crucial metabolites. (A) The PCA analysis between PA-R8SCF, PA-R16SCF, and PA-S8, PA-S16, respectively. Each dot represents the technique replicates in the plot. (B) S-plot generated from OPLS-DA. Triangle represents individual metabolite, where potential biomarkers are highlighted with red, which is greater or equal to 0.05 and 0.5 for absolute value of covariance p and correlation p(corr), respectively. (C–E) The scatter plot of biomarkers in data (B).
