Fig. 3

The levels of plasma 4-HNE in AECOPD patients with different lengths of hospital stay. The levels of plasma 4-HNE in AECOPD patients with different hospital stays. *P < 0.05, **P < 0.01.

The levels of plasma 4-HNE in AECOPD patients with different lengths of hospital stay. The levels of plasma 4-HNE in AECOPD patients with different hospital stays. *P < 0.05, **P < 0.01.