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To understand the molecular mechanisms of functional synergy between TAL1 and LMO in tumorigenesis and transcriptional regulation , we tried to identify downstream target genes regulated by TAL1 and LMO by a subtractive PCR method .
 ( protein: LMO, None) , ( protein: TAL1, None) , ( DNA: downstream target genes, None) , ( protein: LMO, 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: LMO, None) , ( protein: TAL1, None) , ( DNA: downstream target genes, None) , ( protein: LMO, None) , ( protein: TAL1, None) 