125I-AV3 SPECT/CT imaging of pancreatic cancer-bearing nude mice showed that the radiotracer was mainly accumulated in the right tumor, and the xenografts tumor in the left lower limb has a very weak imaging, suggesting that 125I-AV3 can target the ITGA5-expressing PSCs rather than cancer cells (Figure 3A). Here, ITGA5 is linked to neoplasm.