Our results indicated that at 3 h, T cells stimulated with either IPF (SN) or CLF (SN) showed a significant decrease in the expression of pro-apoptotic genes BID and DIABLO; however, T cells exposed to IPF (SN) showed a less dramatic downregulation compared with those induced by CLF (SN). The gene discussed is BID; the disease is idiopathic pulmonary fibrosis.