1033
HS I , IV , and V were exclusively observed in the erythroid/megakaryocytic cell lines that express tal-1 from the promoters 1a and 1b .
 ( cell line: erythroid/megakaryocytic cell lines, None) , ( DNA: tal-1, 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:
 ( cell line: erythroid/megakaryocytic cell lines, None) , ( DNA: tal-1, None) 