11833
IL-6 treatment of the human lymphoblastoid cell line , SKW6.4 , leads to increased IgM production .
 ( cell line: human lymphoblastoid cell line, None) , ( protein: IL-6, None) , ( cell line: SKW6.4, None) , ( protein: IgM, 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: human lymphoblastoid cell line, None) , ( protein: IL-6, None) , ( cell line: SKW6.4, None) , ( protein: IgM, None) 