ALB and neoplasm: Compared to PBS treated group, sDll4 treated tumors showed an increase in total tumor vessel density of 41% on average (p < 0.01), reduced mural cell coverage of 47% (p < 0.05), and reduced lectin perfusion of 32% (p < 0.05) sEphB4-Alb treatment in contrast caused reduced microvessel density (39% reduction, p < 0.01), pericyte recruitment (39%) and lectin perfusion (21%).