CD34 and neoplasm: Focusing on the presence of larger vessels, that is CD34+ vessels with an area of at least 50 μm2, showed SW480FJX1MYC tumors contained approximately twice as many of these larger vessels than SW480VEC tumors per mm2 of tumor section (5.84 versus 3.18 respectively, P<0.005, Figure 4C, representative images in 4D).