Figure 1.

(A) Sample collection. (B) Qualitative and quantitative approaches. Qualitative, semi-qualitative, and quantitative proteomics strategies used in CPP proteomics studies evaluated. Abbreviations: Protein–Protein Interactions (PPI), Western blot (WT); Immunohistochemistry (IHC); Enzyme-linked immunosorbent assay (ELISA); Mass spectrometry (MS); One- Dimensional Gel Electrophoresis (1DE), Two-Dimensional Gel Electrophoresis, Two-Dimensional Difference Gel Electrophoresis (D-DIGE), stable isotope labelling with amino acids in cell culture (SILAC), isotope-coded affinity tag (ICAT).