Based on the results in Fig. 5, we analyzed the tumoral distribution of nanoparticles using several cellular markers such as Ki-67 (proliferating tumor cells), CD31 (endothelial cells/macrophages), F4/80 (tumor-associated macrophages), and CD11b (monocytes/macrophages) as shown in Fig. 7. The gene discussed is PECAM1; the disease is neoplasm.