1031
Methylation studies indicated that the tal-15' GC-rich region behaves like a CpG island , hypomethylated in normal cells , and methylated de novo on transcriptionally inactive alleles in established cell lines .
 ( DNA: transcriptionally inactive alleles, None) , ( DNA: tal-15#$%# GC-rich region, None) , ( cell line: established cell lines, None) , ( cell type: normal cells, None) , ( DNA: CpG island, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: transcriptionally inactive alleles, None) , ( DNA: tal-15#$%# GC-rich region, None) , ( cell line: established cell lines, None) , ( cell type: normal cells, None) , ( DNA: CpG island, None) 