Differential microRNA (miR) expression profile in patients with idiopathic pulmonary fibrosis (IPF). Expression levels of miR-7 (A), miR-21 (B), miR-23a (C), miR-23b (D), miR-130 (E), miR-130b (F), miR-181 (G), and miR-26 (H), using u6 as a control from normal, IPF, and IPF+PH lung tissue samples. *P ≤ 0.05, **0.001 < P < 0.01, ANOVA comparisons between normal and IPF or IPF+PH groups.