Retrovirus-mediated gene transfer of human endostatin inhibits growth of human liver carcinoma cells SMMC7721 in nude mice

Figure 5 Tumor sections were stained with an antibody reac-tive to CD₃₄. A: Tumor section from endostatin-transfected g1roup showed only a few positively stained vascular endothelial cells. B: Similar section of the control group showed highly vasuclarized tumor tissue. C: Microvessel density (MVD) was quantified by counting of positively stained endothelial cells from 5 fields in each tumor section. Bars, SD. ^bP < 0.01, compared with control SMMC-pLncx. × 200.