EZH2 and neoplasm: Moreover, the tumour weight and volume of nude mice injected with A549 cells transduced with oe‐EZH2 and exo‐miR‐30b‐5p were lower than that of nude mice injected with A549 cells transduced with oe‐EZH2 and exo‐NC, while compared with nude mice injected with A549 cells transduced with oe‐EZH2 and exo‐miR‐30b‐5p, tumour weight and volume were elevated in nude mice injected with A549 cells transduced with oe‐EZH2, exo‐miR‐30b‐5p and SC79 (Figure 5A,B).