Table 1. Chacteristics of the study subjects.

	Subjects
	Control	Asthma	COPD	Lung cancer
Subjects No.	90	294	242	325
Age (year)*	51±10	55±15	66±7	66±9
Male (%)	57	42	88	84
Cigarette smoker (%)	52	27	85	75
Anti-EV IgG† (%)	4.4	13.6	29.3	54.9

^*Mean±SD; ^†The positive rate of IgG sensitization to dust EVs based on a high anti-dust EV IgG level in serum.