9768
We investigated the CD8+ cytotoxic T lymphocyte (CTL) repertoire to an HLA B8-restricted peptide , RAKFKQLLQ , located in the Epstein-Barr virus (EBV) immediate-early protein , BZLF1 .
 ( cell type: CD8+ cytotoxic T lymphocyte, None) , ( protein: CD8+ cytotoxic T lymphocyte (CTL) repertoire, None) , ( protein: BZLF1, None) , ( protein: Epstein-Barr virus (EBV) immediate-early protein, 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 type: CD8+ cytotoxic T lymphocyte, None) , ( protein: CD8+ cytotoxic T lymphocyte (CTL) repertoire, None) , ( protein: BZLF1, None) , ( protein: Epstein-Barr virus (EBV) immediate-early protein, None) 