1893
Therefore, the effects of PGE2 vary depending on the mode of T cell activation , and the IL-4 and IL-5 are regulated differently from other cytokines .
 ( protein: IL-4, None) , ( protein: IL-5, None) , ( protein: PGE2, None) , ( protein: cytokines, 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-4, None) , ( protein: IL-5, None) , ( protein: PGE2, None) , ( protein: cytokines, None) 