EGFR and nasopharyngeal carcinoma: Meanwhile, ROS detection also confirmed that H‐EVs‐treated ascitic cells 6–10B and S26 presented lower intracellular ROS levels (Figure 6c), indicating that EGFR‐rich H‐EVs induces EGFR up‐regulation and ROS reduction in low metastatic NPC cells and may therefore play a novel non‐redundant promoting role in NPC cells survival and metastasis in vivo.