Quantification of CD34-marked microvessel density (MVD) in tumor xenograft samples indicated that samples derived from the group of HepG2 k tumor with control IgG revealed a 59.4±40.0% higher angiogenesis in comparison to the group of parental HepG2 tumor with control IgG (P<0.05; Figure 5C and D). The gene discussed is CD34; the disease is neoplasm.