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. 2020 Jul 12;2020:4652898. doi: 10.1155/2020/4652898

Figure 7.

Figure 7

The serum concentration of TNF-α in patients with COPD, ACO, and BA with varying severity of disease and airway obstruction. COPD: chronic obstructive pulmonary disease; ACO: asthma-COPD overlap; BA: bronchial asthma; I: GOLDI, ACOI; II: GOLDII, ACOII; III: GOLDIII, ACOIII; IV: GOLDIV, ACOIV; BA2: moderate bronchial asthma, BA3: severe bronchial asthma; ∗p < 0.05 versus patients with GOLDI, ^p < 0.05 versus patients with GOLDII and GOLDIII; ∨p < 0.05 versus patients with ACOIV; #p < 0.05 versus patients with ACOI.