Table 1.

Sox2 and Oct4 expressions in cancerous tissues, precancerous tissues and benign lung tumor tissue.

	Cancerous tissues			Paracancerous tissues			Benign tumor tissues
	a Pos	b Neg	Totle	Pos	Neg	Totle	Pos	Neg	Totle
Sox2	31 (70.5%)	13	44	0	44	44	0	21	21
Oct4	24 (54.5%)	20	44	0	44	44	0	21	21

^aPos = positive;

^bNeg = negative.