7714
A novel Ets protein was isolated by yeast one-hybrid screening of a cDNA library made from lipopolysaccharide-stimulated mouse splenic B cells , using the SP6 kappa promoter kappaY element as a bait.
 ( cell line: lipopolysaccharide-stimulated mouse splenic B cells, None) , ( DNA: SP6 kappa promoter kappaY element, None) , ( protein: Ets protein, None) , ( DNA: cDNA library, 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: lipopolysaccharide-stimulated mouse splenic B cells, None) , ( DNA: SP6 kappa promoter kappaY element, None) , ( protein: Ets protein, None) , ( DNA: cDNA library, None) 