Table 1.

Expression of ADAM17 and MMP21 in hepatocellular carcinoma and paracancerous tissues(Chi-square test)

Tissues	ADAM17 expression		High expression rate (%)	P
	Low expression	High expression
A
Paracancerous tissues	28	37	56.92	<0.001
HCC tissues	5	60	92.31
Tissues	MMP21 expression		High expression rate (%)	P
	Low expression	High expression
B
Paracancerous tissues	34	31	47.69	<0.001
HCC tissues	7	58	89.23