DNA methylation errors in cloned mice disappear with advancement of aging.
Senda S, Wakayama T, Arai Y, Yamazaki Y, Ohgane J, Tanaka S, Hattori N, Yanagimachi R, Shiota K. DNA methylation errors in cloned mice disappear with advancement of aging. Cloning Stem Cells. 2007; 9(3):293-302.