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. 2017 May 23;12(5):e0177389. doi: 10.1371/journal.pone.0177389

Fig 2. Volcano plot of significance against effect.

Fig 2

Each dot represents one of the reproducible protein spots, with the –log10 of the P value plotted against the abundance difference between two biological conditions (log2 on the abscissa). Blue color denotes increased protein levels; red color denotes decreased protein levels; grey color denotes spots in meaningful sectors (effect factor <|2-fold|, P >0.05, or both).