4768
To gain further knowledge of the IL-12R complex and the IL-12 signal transduction pathway in cytotoxic T cells , we studied a number of human T cell lines that had been transformed to permanent growth with Herpesvirus saimiri , an oncogenic virus of nonhuman primates .
 ( protein: IL-12R complex, None) , ( protein: IL-12, None) , ( cell type: cytotoxic T cells, None) , ( cell line: human 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: IL-12R complex, None) , ( protein: IL-12, None) , ( cell type: cytotoxic T cells, None) , ( cell line: human T cell lines, None) 