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Effect of miR-21 expression on the number of autophagosomes in NSCLC A549 cells. To observe the formation of autophagosomes in A549 cells, laser confocal microscopy was performed. Magnification, ×200. Green and red vesicles represented autophagy. *P<0.05 compared with miR mimics-NC group; #P<0.05 compared with miR inhibitor-NC group. NSCLC, non-small cell lung cancer; NC, negative control.
