Fig. 3From: Effect of doxofylline on pulmonary inflammatory response and oxidative stress during mechanical ventilation in rats with COPDComparison of PaCO2 and PaO2 in blood gas analysis among the different groups of rats (n = 12, \(\overline{X}\) ± s). Note: Compared with group C, aP < 0.05; compared with group N, bP < 0.05Back to article page