6047
Activation of STAT5 by IL-4 relies on Janus kinase function but not on receptor tyrosine phosphorylation , and can contribute to both cell proliferation and gene regulation .
 IL-4, STAT5, Janus kinase
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:
 IL-4, STAT5, Janus kinase