1029
To gain further insight into the molecular mechanisms that control tal-1 expression , we investigated tal-1 chromatin structure in erythroid/megakaryocytic cell lines and in T-cell lines either with or without tal-1 rearrangements .
 ( DNA: tal-1, None) , ( DNA: tal-1 chromatin structure, None) , ( cell line: T-cell lines, None) , ( DNA: tal-1, None) , ( DNA: tal-1 rearrangements, None) , ( DNA: tal-1, None) , ( cell line: erythroid/megakaryocytic cell lines, 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: tal-1, None) , ( DNA: tal-1 chromatin structure, None) , ( cell line: T-cell lines, None) , ( DNA: tal-1, None) , ( DNA: tal-1 rearrangements, None) , ( DNA: tal-1, None) , ( cell line: erythroid/megakaryocytic cell lines, None) 