14821
In this report, we show that in human peripheral blood T cells , CD28 -mediated signal transduction involves the rel family proteins -- c-Rel , p50 , and p65 .
 ( protein: CD28, None) , ( protein: p50, None) , ( cell type: human peripheral blood T cells, None) , ( protein: rel family proteins, None) , ( protein: c-Rel, None) , ( protein: p65, 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: CD28, None) , ( protein: p50, None) , ( cell type: human peripheral blood T cells, None) , ( protein: rel family proteins, None) , ( protein: c-Rel, None) , ( protein: p65, None) 