Table 1.

Sample Information Among the 8 Paired Groups Investigated in the Study

Group	Samples	GEO number	Comparison	Sample number
A	Fetal lung	GSE43767	Mid-term fetal lung versus early-term fetal lung	9 versus 10
B	Fetal lung	GSE43767	Mature lung versus mid-term fetal lung	15 versus 9
C	AECs	GSE67061	AECs with lung cancer versus AECs without cancer	56 versus 17
D	AECs	GSE4115	AECs with lung cancer versus AECs without cancer	97 versus 90
E	AECs	GSE19027	AECs with lung cancer versus AECs without cancer	21 versus 39
F	Y-BE	GSE67061	Y-BE p115 versus p25	4 versus 4
G	LSCC	GSE67061	Late stage versus early stage*	22 versus 46
H	LSCC	GSE67061	With lymph node metastasis versus without lymph node metastasis	33 versus 36

^*Late stage represents Stage III, whereas early stage represents Stages I and II.

AECs, airway epithelial cells; LSCC, lung squamous cell carcinoma.