Figure 2. PegIFN/RBV therapy results in preferential phosphorylation of STAT1 over STAT4 in NK cells.
(A–B) Maximal changes in pSTAT1 (A) and pSTAT4 (B) expression levels in chronic HCV patients of total CD3-CD56+ NK cells (left panel) and their CD56bright (middle panel) and CD56dim (right panel) subsets prior to and following PegIFN/RBV therapy initiation. (C) pSTAT1/pSTAT4 ratio (MFI) throughout the first 48h of therapy. *P<0.05, **P<0.01, **P<0.001 (comparing the indicated individual time points to the 0h time point).