Results of real-time RT-PCR for fibrogenetic and pro-inflammatory cytokine genes in the study groups. Data are expressed as mean ± SEM. Mann–Whitney test: *P < 0.05, **P < 0.01: 5/6Nx-vehicle versus 5/6Nx-erlotinib. The values were normalized to the GAPDH values and then expressed as relative quantification to the Sham rats. The horizontal dotted line shows the expression levels in the Sham rats.