7141
Previous studies have characterized the CD28 augmentation of TCR -mediated signaling in peripheral blood T cells through transcriptional activation of an IL-2 promoter CD28 response element ( CD28RE ), along with enhanced mRNA stability.
 ( protein: IL-2, None) , ( protein: TCR, None) , ( cell type: peripheral blood T cells, None) , ( protein: CD28, None) , ( DNA: CD28 response element, None) , ( DNA: CD28RE, None) , ( protein: CD28, 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: IL-2, None) , ( protein: TCR, None) , ( cell type: peripheral blood T cells, None) , ( protein: CD28, None) , ( DNA: CD28 response element, None) , ( DNA: CD28RE, None) , ( protein: CD28, None) 