Integrin αvβ6 sustains and promotes tumor invasive growth in colon cancer progression

Table 2 Effects of both integrin αvβ6 and matrix metalloproteinase-9 expression in100 cases of colon carcinoma

Variable		Immunoreactivity of tumor samples (n)
		Positive	Low expression		High expression
ανβ6	Deep section of tumor	38	27	71.1%	11	28.9%
	Superficial section of tumor	38	10	26.3%	28	73.7%1
MMP-9	Deep section of tumor	68	35	51.5%	33	48.5%
	Superficial section of tumor	68	16	23.5%	52	76.5%1

¹χ² test indicates that increased integrin ανβ6 expression rates are significantly different between the superficial section and deep section of the tumors (P < 0.05). There is also a significant difference for the increased MMP-9 expression rates between the superficial section and deep section of the tumors (P < 0.05). ανβ6: Integrin ανβ6; MMP-9: Matrix metalloproteinase-9.