Fig. 6
From: Footprints of antigen processing boost MHC class II natural ligand predictions
Correlation between processing signals found in the six different data sets employed in this work, for upstream and downstream regions. Each matrix entry displays the Pearson correlation coefficient (PCC) value of two data sets under study. A PCC value of one corresponds to a maximum correlation, while a PCC value of zero means no correlation. Processing signals used in this figure were generated as explained in Fig. 5. All observed PCC values are statistically different from random (P <  0.001, exact permutation test)