1878
OBJECTIVE: To determine whether activation of Epstein-Barr virus ( EBV ) replication in tumour cells of AIDS-related non-Hodgkin's lymphoma ( ARNHL ) is correlated with CD4+ cell counts and influences antibody response to EBV [ anti-Z Epstein-Barr replicative activator ( ZEBRA ), anti-early antigen ( EA ), anti-viral capsid antigen ( VCA )].
 ( protein: anti-early antigen, None) , ( protein: CD4+, None) , ( cell type: tumour cells, None) , ( protein: anti-Z Epstein-Barr replicative activator, None) , ( protein: ZEBRA, None) , ( protein: anti-viral capsid antigen, None) , ( protein: VCA, None) , ( protein: EA, 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: anti-early antigen, None) , ( protein: CD4+, None) , ( cell type: tumour cells, None) , ( protein: anti-Z Epstein-Barr replicative activator, None) , ( protein: ZEBRA, None) , ( protein: anti-viral capsid antigen, None) , ( protein: VCA, None) , ( protein: EA, None) 