Fig. 4.

Principal component analysis visualizing the multigroup comparison (FDR < 0.05) between the proteomes of cells exposed to adjuvants and indicated controls (Control and vehicle blue, NND grey, POL yellow, BEN red. 50 differentially abundant proteins). Cells were treated with 75 µM PPD, 6.5 µM BEN, 500 µM POL, and 220 µM NND.