ITGAV and neoplasm: The cellular composition of tumor nodules dissected from jejunal lymph nodes was confirmed by a FITC mouse anti-human CD51/CD61 monoclonal antibody stain on the cells, and as showed in Figure 3C, the cells isolated from tumors expressed the αVβ3 integrin, and when compared to the tumor-to-blood ratio in the mice receiving the 111In-labeled-liposome (1.3), the ratio in the mice receiving the 111In-labeled-cyclic RGDfK-liposome significantly increased (5.6) (Table 2).