8841
Interleukin 16 ( IL-16 ) is a chemotactic cytokine that binds to the CD4 receptor and affects the activation of T cells and replication of HIV .
 ( protein: chemotactic cytokine, None) , ( protein: Interleukin 16, None) , ( protein: CD4 receptor, None) , ( cell type: T cells, None) , ( protein: IL-16, 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: chemotactic cytokine, None) , ( protein: Interleukin 16, None) , ( protein: CD4 receptor, None) , ( cell type: T cells, None) , ( protein: IL-16, None) 