4287
Third, a coimmunoprecipitation assay showed that in HTLV-1 -infected human T lymphocytes , Tax and TFIIA were associated.
 ( protein: TFIIA, None) , ( protein: Tax, None) , ( cell line: HTLV-1 -infected human T lymphocytes, 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: TFIIA, None) , ( protein: Tax, None) , ( cell line: HTLV-1 -infected human T lymphocytes, None) 