13235
When peripheral murine monocytes that do not express the lipoxygenase were treated with IL-4 expression of 12/15-lipoxygenase mRNA was induced, suggesting pretranslational control mechanisms .
 ( protein: lipoxygenase, None) , ( cell type: monocytes, None) , ( protein: 12/15-lipoxygenase, None) , ( protein: IL-4, None) , ( RNA: 12/15-lipoxygenase mRNA, 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: lipoxygenase, None) , ( cell type: monocytes, None) , ( protein: 12/15-lipoxygenase, None) , ( protein: IL-4, None) , ( RNA: 12/15-lipoxygenase mRNA, None) 