3017
In this study, serum from a patient with primary biliary cirrhosis was used to identify a cDNA encoding a novel component of the NB , a 140-kDa protein designated Sp140 .
 ( protein: 140-kDa protein, None) , ( protein: Sp140, 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: 140-kDa protein, None) , ( protein: Sp140, None) 