12083
In PMA-treated THP-1 cells we could detect three major transcription initiation sites as revealed by Nuclease Protection Assay carried out with two overlapping antisense RNA probes .
 ( cell line: PMA-treated THP-1 cells, None) , ( RNA: overlapping antisense RNA probes, None) , ( DNA: transcription initiation sites, 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: PMA-treated THP-1 cells, None) , ( RNA: overlapping antisense RNA probes, None) , ( DNA: transcription initiation sites, None) 