DNA methylation changes of different repetitive elements in leukemia. DNA methylation of 5 different DNA repetitive elements was measured in Normal peripheral blood (Normal), Chronic phase (Chronic) CML, Accelerated phase (Accelerated) CML, Blast crisis (Blast) CML, and APL. Interspersed repeats: (A) LINE1, (B) Alu Yb8; Tandem repeats: (C) Sat-α, (D) NBL-2, (E) D4Z4. *p vs. normal blood, †p vs. chronic phase.