Fig. 5

Secondary differential metabolites in PGL and LC. A VolcanoPlot (top 10, log2 greater than 0 is high expression, and log2 less than 0 is low expression metabolite). B Heatmap (top 10, Each row is a metabolic peak, and each column is a sample. The color of the heat map is the relative content of each metabolite in each sample). C Internal cross-validation of model based on LASSO. D Area under the curve of model based on Bootstrap