Methylation of the 5 CpG island of the p16/CDKN tumor suppressor gene in normal and transformed human tissues correlates with gene silencing. - Gonzalez-Zulueta,M.; Bender,C.M.; Yang,A.S.; Nguyen,T.; Beart,R.W.; Van Tornout,J.M.; Jones,P.A. (Cancer Res, 1995)