Table 2. The comparison between the tumor and the adjacent tissue of the same patients.

NORMAL	ESCC
	TGF-β1				P-SMAD2/3				TGFβR II
	−	+	++	P	−	+	++	P	−	+	++	P
−	2	9	19	<0.001	1	7	16	<0.001	6	2	1	0.601
+	1	1	20		5	2	13		2	32	2
++	2	4	0		1	13	0		1	4	9