6079
Since this is the first report on IL-10 induced signal transduction , these data may help to identify the intracellular mechanisms by which IL-10 stimulates human B-cells .
 human B-cells, IL-10, IL-10
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:
 human B-cells, IL-10, IL-10