11157
Two main pieces of data prompted us to focus on the activation of the platelet fibrinogen receptor , the alphaIIbbeta3 integrin .
 ( protein: alphaIIbbeta3, None) , ( protein: platelet fibrinogen receptor, None) , ( protein: alphaIIbbeta3 integrin, 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: alphaIIbbeta3, None) , ( protein: platelet fibrinogen receptor, None) , ( protein: alphaIIbbeta3 integrin, None) 