11831
Involvement of Stat3 in interleukin-6 -induced IgM production in a human B-cell line .
 IgM, human B-cell line, interleukin-6, Stat3
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 IgM, human B-cell line, interleukin-6, Stat3