13446
These data support the view that stimulation through CD28 can induce some effector functions in T cells and suggest that this capacity is associated with a particular pattern of early signaling events
 ( protein: CD28, None) , ( cell type: T cells, 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: CD28, None) , ( cell type: T cells, None) 