10962
We previously established a critical role for the transcription factor GATA-3 in IL-5 promoter activation in EL-4 cells , which express both Th1- and Th2- type cytokines .
 ( protein: IL-5, None) , ( protein: transcription factor, None) , ( DNA: IL-5 promoter, None) , ( cell line: EL-4 cells, None) , ( protein: GATA-3, 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-5, None) , ( protein: transcription factor, None) , ( DNA: IL-5 promoter, None) , ( cell line: EL-4 cells, None) , ( protein: GATA-3, None) 