9676
Surprisingly, G28-5 sFv was a potent CD40 agonist that rapidly crosslinked CD40 on the cell surface but did not crosslink CD40 -Ig in solution.
 ( protein: CD40, None) , ( protein: CD40, None) , ( protein: CD40 -Ig, None) , ( protein: CD40, None) , ( protein: CD40 agonist, None) , ( protein: G28-5 sFv, 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: CD40, None) , ( protein: CD40, None) , ( protein: CD40 -Ig, None) , ( protein: CD40, None) , ( protein: CD40 agonist, None) , ( protein: G28-5 sFv, None) 