Figure 2

Principal component analysis of proteomic data at the peptide level. Dots represent the sample coordinates in principal components 1 and 2 derived from the 1.448 peptides m with available quantification for all samples in the study. Figures in the axes indicate the percentage of variance explained by the corresponding Principal Component. PC1 principal component 1. PC2 principal component 2. (Figure created using R, version 3.6.0, https://www.R-project.org/).