In the antagomir‐treated group compared with controls, significantly slower subcutaneous tumour growth and notably reduced tumour weight after 2 weeks were observed (Figure 3F–H), and a significant decrease in the proportion of Ki‐67‐positive cells was found by subsequent immunohistochemistry (IHC) staining on the subcutaneous tumours (FigureS3). This evidence concerns the gene MKI67 and neoplasm.