2272
Furthermore , formation of foci of transformed RECs by the c - jun / ras combination was augmented 3 - fold by the tumor promoter phorbol 12 - tetradecanoate 13 - acetate .
 c - jun, ras
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 c - jun, ras