(D) Monocyte-polarized M2 macrophages were transfected with Cy3-labelled CRNDE and exosomes were isolated from the medium (Cy3-CRNDE-EXO). Then, SGC7901 cells were incubated with Cy3-CRNDE-EXO. Confocal microscopy was used to detect the Cy3-labelled CRNDE in SGC7901 cells. The nuclei were stained with DAPI. Scale bar= 20 µm. Right: Flow cytometry was performed to quantitate the Cy3-positive cells. **P<0.01 vs. SGC7901 cells incubated with the control EXO. Data information: The results shown are from three biological replicates. Data are expressed as mean ± SD. Student's t-test. 