10711
To confirm that CCK(B) receptors are involved in AP-1 response , we investigated the CCK-8 effect on interleukin-2 expression , a natural endogenous gene regulated by several factors, including AP-1 .
 ( protein: CCK(B) receptors, None) , ( protein: AP-1, None) , ( protein: AP-1, None) , ( protein: interleukin-2, None) , ( DNA: endogenous gene, 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: CCK(B) receptors, None) , ( protein: AP-1, None) , ( protein: AP-1, None) , ( protein: interleukin-2, None) , ( DNA: endogenous gene, None) 