Fig. 2From: Effect of doxofylline on pulmonary inflammatory response and oxidative stress during mechanical ventilation in rats with COPDComparison of Ppeak (cmH2O) at different time points among the different groups of rats (n = 12, \(\overline{X}\) ± s). Note: Compared with group C, aP < 0.05; compared with group N, bP < 0.05; compared with T0 in group D, cP < 0.05Back to article page