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Global arginine bioavailability ratio in each group.
Notes: The horizontal solid lines show the mean values in each group. The statistical analysis was performed using the Steel–Dwass method. A, AECOPD without bacterial infection (group A); B, AECOPD with bacterial infection (group B); C, COPD in a stable state, control (group C).
Abbreviations: AECOPD, acute exacerbation of COPD; GABR, global arginine bioavailability ratio; NS, not statistically significant.
