Table 1.

Comparison of Cellular Dipeptidyl Peptidase 4 Immunostaining Scores between Large and Small Conducting Airways

Airway	Ciliated cells	Nonciliated cells	Goblet cells
Large airway	1.1 ± 0.3	1.1 ± 0.3	2.1 ± 0.7
Small airway	1.5 ± 0.7	1.5 ± 0.6	1.8 ± 0.7
P value∗	0.23	0.17	0.43

^∗Mann-Whitney U-test.