4290
In addition, transfection of human T lymphocytes with TFIIA expression vectors enhanced Tax -activated transcription of an HTLV-1 long terminal repeat-chloramphenicol acetyltransferase reporter construct .
 ( DNA: HTLV-1 long terminal repeat-chloramphenicol acetyltransferase reporter construct, None) , ( protein: Tax, None) , ( DNA: TFIIA expression vectors, None) , ( cell type: human T lymphocytes, None) , ( protein: TFIIA, 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:
 ( DNA: HTLV-1 long terminal repeat-chloramphenicol acetyltransferase reporter construct, None) , ( protein: Tax, None) , ( DNA: TFIIA expression vectors, None) , ( cell type: human T lymphocytes, None) , ( protein: TFIIA, None) 