4062
PU.1 is completely absent from peripheral T cells and most T cell lines based on sensitive RT-PCR assays .
 ( cell type: peripheral T cells, None) , ( cell line: T cell lines, None) , ( protein: PU.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 type: peripheral T cells, None) , ( cell line: T cell lines, None) , ( protein: PU.1, None) 