14761
Anti-TR55 antibody cross-linking in chronically infected U1 promonocytic cultures could only partially substitute for TNF-alpha-induced HIV-1 expression.
 ( cell line: chronically infected U1 promonocytic cultures, None) , ( protein: Anti-TR55 antibody, 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 line: chronically infected U1 promonocytic cultures, None) , ( protein: Anti-TR55 antibody, None) 