12288
To examine transcriptional regulation of cytokine genes by CD15 engagement, a CAT plasmid reporter construct containing IL-1 beta promoter/enhancer sequences was introduced into MM6 .
 ( cell line: MM6, None) , ( DNA: cytokine genes, None) , ( DNA: IL-1 beta promoter/enhancer sequences, None) , ( protein: IL-1 beta, 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:
 ( cell line: MM6, None) , ( DNA: cytokine genes, None) , ( DNA: IL-1 beta promoter/enhancer sequences, None) , ( protein: IL-1 beta, None) 