2508
Although two cases expressed CD4 , no case expressed CD2 , CD3 , or CD8 and no case showed clonal rearrangement of genes encoding the T-cell receptor ( TCR beta , gamma , delta ).
 ( protein: CD3, None) , ( protein: T-cell receptor, None) , ( protein: CD2, None) , ( protein: CD4, None) , ( protein: CD8, 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: CD3, None) , ( protein: T-cell receptor, None) , ( protein: CD2, None) , ( protein: CD4, None) , ( protein: CD8, None) 