Figure 2

Representative serum GC/MS TIC chromatograms and the scores plots of PCA and PLS-DA. (A), the representative serum GC/MS TIC chromatogram of LUPM patient; (B), the representative serum GC/MS TIC chromatogram of HUPM patient; (C), PCA scores plots of LUPM (dot) and HUPM serums (diamond); (D), PLS-DA scores plots of LUPM (dot) and HUPM serums (diamond).