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. 2021 Mar 10;15(3):e0009172. doi: 10.1371/journal.pntd.0009172

Fig 1. PCA models created using data obtained through LC-ESI-TOF-MS analysis in positive ionization mode on a T3 column (PC1 = 26.7%, PC2 = 8.8%), amide column (PC1 = 40.1%, PC2 = 9.4%), and in negative mode on an amide column (PC1 = 17.6, PC2 = 12.5%).

Fig 1

Red, purple, blue, and yellow solid circles correspond to AP, healthy, QC, RP patients, respectively.