Specifically, ND reduced the number of Sox2+ (NPC) cells (P=0.02; Figures 2a–c and e), Ki67 (mitotic) cells (P=0.002; Figures 2a–c) and Sox2+/Ki67+ (proliferating NPC) cells (P=0.04; Figures 2a–d) in the SGZ. This evidence concerns the gene MKI67 and nasopharyngeal carcinoma.