DNA damage accumulates in genome DNA during the long life of neurons. thus DNA damage repair is indispensable to keep normal functions of neurons. We previously reported that Ku70. a critical molecule for DNA double strand break (DSB) repair. https://www.bekindtopets.com/discount-Original-U-S-Civil-War-Era-M-1840-Light-Artillery-Officers-Saber-with-Imported-Blade-Scabbard-super-save/