6988
The c-Myc oncoprotein is important in control of cellular proliferation and differentiation , while Yin-Yang 1 ( YY1 ) has been shown to control the expression of a number of cellular and viral genes .
 c-Myc, Yin-Yang 1, YY1, c-Myc oncoprotein
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:
 c-Myc, Yin-Yang 1, YY1, c-Myc oncoprotein