3899
The 75-kD protein is recognized by antibodies to SLP-76 , which has recently been isolated from T cells and sequenced.
 ( protein: 75-kD protein, None) , ( protein: SLP-76, None) , ( cell type: T cells, 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: 75-kD protein, None) , ( protein: SLP-76, None) , ( cell type: T cells, None) 