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We have identified a "two-handed" zinc finger protein , denoted ZEB , the DNA-binding specificity of which mimics that of the cellular repressor .
 "two-handed" zinc finger protein, cellular repressor, ZEB
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:
 "two-handed" zinc finger protein, cellular repressor, ZEB