To this end, we compared the expression profile in control and IPF lung fibroblasts in non-stimulated cells and those exposed to 3 ng/ml TGF-β1 for 24 h, using the Affymetrix GeneChipTM Human Transcriptome Arrays 2.0 (Supplemental Dataset 3). The gene discussed is TGFB1; the disease is idiopathic pulmonary fibrosis.