5925
Thymocyte-thymic epithelial cell interaction leads to high-level replication of human immunodeficiency virus exclusively in mature CD4 (+) CD8(-) CD3 (+) thymocytes : a critical role for tumor necrosis factor and interleukin-7 .
 ( protein: tumor necrosis factor, None) , ( cell type: epithelial cell, None) , ( protein: CD4, None) , ( protein: interleukin-7, None) , ( cell type: mature CD4 (+) CD8(-) CD3 (+) thymocytes, None) , ( protein: CD3, 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: tumor necrosis factor, None) , ( cell type: epithelial cell, None) , ( protein: CD4, None) , ( protein: interleukin-7, None) , ( cell type: mature CD4 (+) CD8(-) CD3 (+) thymocytes, None) , ( protein: CD3, None) 