5608
IL-4 activates gene expression by inducing tyrosine phosphorylation , homodimerization , and nuclear translocation of the latent transcription factor , STAT6 ( signal transducer and activator of transcription-6 ).
 IL-4, STAT6, latent transcription factor, signal transducer and activator of transcription-6
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, STAT6, latent transcription factor, signal transducer and activator of transcription-6