Effect of CXCR4 inhibitor on pulmonary artery pressure and right ventricular hypertrophy induced by chronic hypoxia in rats. (A) mPAP, showing representative tracings of pulmonary artery pressure (upper panel) and quantitative data (lower panel). (B-E) Right ventricular hypertrophy, showing data on RV/(LV+S) (B), right ventricular weight (C), left ventricular plus septal weight (D) and whole heart weight (E). *p < 0.05 as compared with other groups and # p > 0.05 as compared with normoxic control rats. n = 5 rats for each group.