Q-PCR verified the transcriptomic analysis demonstrating an ~20-fold higher level of IL-8 expression in IPF MPCs compared with control MPCs (Fig. 1A) and an ~25-fold difference in IL-8 mRNA expression between IPF MPC progeny and control MPC progeny (Fig. 1B). The gene discussed is CXCL8; the disease is idiopathic pulmonary fibrosis.