3551
We measured effects on the HIV-1 LTR in T cell lines that were stimulated with antibodies against CD45 and in those that lacked the expression of CD45 on their surfaces.
 ( protein: CD45, None) , ( protein: CD45, None) , ( DNA: HIV-1 LTR, None) , ( cell line: T cell lines, 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: CD45, None) , ( protein: CD45, None) , ( DNA: HIV-1 LTR, None) , ( cell line: T cell lines, None) 