14342
In parallel, CD2 + CD28 activation triggered a significant intracellular thiol decrease, suggesting that oxygen radicals are involved in the signaling pathway of adhesion molecules .
 ( protein: CD2, None) , ( protein: adhesion molecules, None) , ( protein: CD28, 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: CD2, None) , ( protein: adhesion molecules, None) , ( protein: CD28, None) 