Total neurite outgrowth was calculated at 24 h after transfection of miR-103 and PTGS2 mimic in PC12 cellular AD model (Figure 7A), which disclosed that total neurite outgrowth was decreased in miR-103+&PTGS2+ group than miR-103+ group, as well as in PTGS2+ group than NC group (Figure 7B). The gene discussed is PTGS2; the disease is Alzheimer disease.