CXCL10 and idiopathic pulmonary fibrosis: It has been reported that in HTLV-1 positive cryptogenic fibrosing alveolitis (CFA) patients, a chronic inflammatory interstitial lung disease, the BALF levels of CCL3 (Taub et al., 1996; Matsuyama et al., 2003) and CXCL10, T cell chemoattractants and activators (Loetscher et al., 1996; Matsuyama et al., 2003), are higher than those of without HTLV-1 infection.