TNFRSF8 and chronic obstructive pulmonary disease: Based on the aforementioned scoring system, scores of CD30 expression in control group, COPD model group, and anti-CD30L COPD group were 3.07 ± 0.46, 5.78 ± 0.55, and 5.42 ± 0.90, respectively (Figure 3(a)).