14559
The reactivity of murine monoclonal antibodies , anti-CD4-FITC , anti-CD8-FITC , anti-CD2-FITC and anti-calla-FITC , were analyzed using flow cytometry .
 ( protein: anti-CD8-FITC, None) , ( protein: anti-CD2-FITC, None) , ( protein: anti-calla-FITC, None) , ( protein: anti-CD4-FITC, None) , ( protein: murine monoclonal antibodies, 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: anti-CD8-FITC, None) , ( protein: anti-CD2-FITC, None) , ( protein: anti-calla-FITC, None) , ( protein: anti-CD4-FITC, None) , ( protein: murine monoclonal antibodies, None) 