Serum Ang II levels were significantly increased in the BO group compared to the control (Control vs. BO: 35 ± 28 vs. 103 ± 31 pg/mL, P < 0.05 vs. Control), and the increase was significantly suppressed by Cap (BO vs. BO + Cap: 103 ± 31 vs. 32 ± 9 pg/mL, P < 0.05 vs. BO) (Fig. 2A). This evidence concerns the gene AGT and bronchiolitis obliterans syndrome.