VIM and idiopathic pulmonary fibrosis: Regarding the comparison between the IPF group with PJ and the control group with PJ, we found that two proteins (hemoglobin subunits alpha and beta) were downregulated in the first group and upregulated in the second one, while tyrosine 3-monooxygenase and vimentin were regulated in opposite directions (Figure 1E and Table S1).