687
In the leukemic cells of patients without detectable TAL1 rearrangements , TAL1 transcription occurred in either a monoallelic (3 of 7 patients ) or a biallelic (4 of 7 patients ) fashion.
 ( protein: TAL1, None) , ( cell type: leukemic cells, None) , ( protein: TAL1, 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:
 ( protein: TAL1, None) , ( cell type: leukemic cells, None) , ( protein: TAL1, None) 