338
A conserved motif in the promoters of several cytokines expressed by human Th2-type lymphocytes .
 ( DNA: conserved motif, None) , ( DNA: promoters, None) , ( cell line: human Th2-type lymphocytes, 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:
 ( DNA: conserved motif, None) , ( DNA: promoters, None) , ( cell line: human Th2-type lymphocytes, None) , ( protein: cytokines, None) 