CXCR4 and neoplasm: Histological assessments using H&E staining showed that cellular infiltration in tumor tissues was significantly reduced in the oe‐NC+M2pep‐Cs NPs/Plerixafor group compared to the oe‐NC group, whereas infiltration was significantly increased in the oe‐CXCR4 group and even more so in the oe‐CXCR4+M2pep‐Cs NPs/Plerixafor group (Figure 6C).