Fig. 6

Expression validation of DE-FRGs. A RT-qPCR verified the mRNA expression of six (randomly selected) of 13 DE-FRGs from control (n = 7) and IPF (n = 11) lung tissues. *P < 0.05; **P < 0.01; ***P < 0.001. B Immunohistochemical analysis revealed the protein expression levels of the six genes in the control (n = 7) and IPF (n = 11) lung tissues (× 100)