Table 1.

The expression of uPA, PAI-1 mRNA and protein in histologic differentiation of GC.

Group	n	uPAmRNA (protein)^{^a}				PAI-1 mRNA (protein)^{^b}
Group	n	-	±	+	Positive %	-	±	+	Positive %
I	9	0 (0)	5 (3)	4 (6)	44.4^(66.7)^	0 (0)	4 (2)	5 (7)	54.6^(77.8)^
II	39	5 (3)	13 (13)	21 (23)	53.8 (60.0)	3 (1)	13 (12)	23 (26)	60.0 (66.7)
III	62	15 (10)	10 (7)	37 (45)	59.7 (72.6)	16 (13)	13 (9)	33 (40)	53.2 (64.5)

Comparison among the groups of GC
↵* P<0.05
↵a The relationship between the expressions of uPA mRNA and protein was significantly positive, r =0.686, P < 0.001
↵b The relationship between the expressions of PAI-1 mRNA and protein was significantly positive, r = 0.812, P < 0.001.