Fig. 1

PCA score plots, OPLS-DA score plots, and corresponding validation plot of OPLS-DA results derived from FF metabolomics profiles comparing PCOS and CON.a:The PCA score scatter plot of all samples;b:The OPLS-DA score plot;c: The permutation test results of OPLS-DA model(red squares represent the control group and blue triangles represent the PCOS group).PCA: Principal component analysis;OPLS-DA:orthogonal projections to latent structures- discriminant analysis;PCOS: Polycystic ovary syndrome