The h-lamin A+C was however not significant, due to high-density tumor region evaluated for both 0 Gy and 20 Gy; but showed near to significant difference in Ki67 positive cells stained in that area (p = 0.05), indicating higher proliferative potential in tumors that were obtained from 20 Gy-pre-irradiated mice brain. The gene discussed is MKI67; the disease is neoplasm.