Figure 5. The differential features of common proteins identified in ten body fluids. (A) Bar plots depict KEGG pathways of commonly identified proteins among ten body fluids. (B) Hierarchical clustering based on the iBAQ quantification. (C) A bubble plot of the KEGG pathway enrichment of S-I, S-II, S-III, S-IV and S-V is shown. (D) A bubble plot of the KEGG pathway enrichment of some body fluids is shown. (E) The line charts of overrepresented proteins of ten body fluids. PPAR: Peroxisome proliferator-activated receptor; ECM: extracellular matrix; CSF: cerebrospinal fluid; KJF: knee joint fluid; MAPK: mitogen-activated protein kinase; KEGG: Kyoto Encyclopedia of Genes and Genome.