2576
When cotransfected with the HIV LTR CAT into CV-1 cells , both the pCD41 and pGD41 clones trans-activated the HIV LTR .
 ( DNA: HIV LTR, None) , ( DNA: pGD41, None) , ( DNA: pCD41, None) , ( cell line: CV-1 cells, None) , ( DNA: HIV LTR CAT, 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: HIV LTR, None) , ( DNA: pGD41, None) , ( DNA: pCD41, None) , ( cell line: CV-1 cells, None) , ( DNA: HIV LTR CAT, None) 