Table 6. MMP-2 and TIMP-2 concentration in blood in patients before and after surgical treatment of a neoplasm.

Marked protein	Study group (n=81), before operation			Study group (n=81), after operation		Significance level
	Concentration (confidence range)	Standard declination		Concentration (confidence range)	Standard declination
MMP-2 (ng/mL)	187.3–221.5	77.3		134.3–143.7	21.3	P<0.001
TIMP-2 (ng/mL)	110.9–132	47.8		7.1–80.0	11.5	P<0.001

MMP-2, matrix metalloproteinase 2; TIMP-2, tissue inhibitor of metalloproteinases 2.