10982
One of the cDNA fragments expressed specifically in CD3 -and CD28 -activated T cells was designated RP1 .
 ( DNA: cDNA fragments, None) , ( cell type: -activated T cells, None) , ( cell type: T cells, None) , ( DNA: RP1, None) , ( protein: CD28, None) , ( protein: CD3, 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:
 ( DNA: cDNA fragments, None) , ( cell type: -activated T cells, None) , ( cell type: T cells, None) , ( DNA: RP1, None) , ( protein: CD28, None) , ( protein: CD3, None) 