Table 5. Differences in MVD between patients with positive and negative expressions of VEGF and CD73 ($\overline{x}\pm s$).

Items	VEGF					CD73
	− (n=27)	+/++/+++ (n=49)	t	P		− (n=20)	+/++/+++ (n=56)	t	P
MVD	44.38±13.81	73.45±10.37	10.371	0.000		47.94±16.03	73.78±12.07	7.515	0.000

VEGF, vascular endothelial growth factor; MVD, microvessel density.