Table 1.

Expressions of MMP-2, MMP-7, and MMP-9 in normal pancreas, cancer cells, and stroma.

	MMP-2		MMP-7		MMP-9
	Negative	Positive	Negative	Positive	Negative	Positive
Normal tissue	28 (96.55%)	1 (3.45%)	27 (93.10%)	2 (6.90%)	29 (100%)	0 (0%)
Cancer cells	13 (44.83%)	16 (55.17%)∗	1 (3.45%)	28 (96.55%)∗∗	16 (55.17%)	13 (44.83%)
Tumor stroma	6 (20.69%)	23 (79.31%)	13 (44.83%)	16 (55.17%)∗∗∗	22 (75.87%)	7 (24.13%)

^∗MMP-2 in cancer cells versus MMP-2 in normal tissue, p = 0.0001.

^∗∗MMP-7 in cancer cells versus MMP-7 in normal tissue, p = 0.0001.

^∗∗∗MMP-7 in cancer cells versus MMP-7 in tumor stroma, p = 0.005.