CD86 and idiopathic pulmonary fibrosis: As shown in Figures 3(a)–3(d), there was no association between the expression of CD86 and FEV1, FVC, TLC, or TLCO in IPF subjects (r = 0.076, p =0.5831; r = 0.099, p = 0.2258; r = −0.023, p = 0.3495; r = 0.029, p = 0.3956).