Strong Components of Epigenetic Memory in Cultured Human Fibroblasts Related to Site of Origin and Donor Age. oleh Nikolay A Ivanov, Ran Tao, Joshua G Chenoweth, Anna Brandtjen, Michelle I Mighdoll, John D Genova, Ronald D McKay, Yankai Jia, Daniel R Weinberger, Joel E Kleinman, Thomas M Hyde, Andrew E Jaffe