3698
Finally, recombinant GHF-1 interacted directly with c-Jun but not c-Fos proteins .
 GHF-1, c-Jun, c-Fos proteins
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:
 GHF-1, c-Jun, c-Fos proteins