1731
The increase in IL-2 gene expression triggered by CD28 involves a kappa B-like sequence in the 5'-regulatory region of the IL-2 promoter , called CD28 -responsive element .
 ( DNA: IL-2 promoter, None) , ( DNA: kappa B-like sequence, None) , ( protein: CD28, None) , ( DNA: CD28 -responsive element, None) , ( protein: IL-2, None) , ( protein: IL-2, None) , ( protein: CD28, None) , ( DNA: 5#$%#-regulatory region, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: IL-2 promoter, None) , ( DNA: kappa B-like sequence, None) , ( protein: CD28, None) , ( DNA: CD28 -responsive element, None) , ( protein: IL-2, None) , ( protein: IL-2, None) , ( protein: CD28, None) , ( DNA: 5#$%#-regulatory region, None) 