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In addition, RFX1 can bind simultaneously, most likely as a heterodimer , with the transcription factor MIBP1 to NRE gamma .
 MIBP1, heterodimer, transcription factor, RFX1, NRE gamma
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:
 MIBP1, heterodimer, transcription factor, RFX1, NRE gamma