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We have analyzed several molecular aspects of IBR/F and shown that the factor associates as stable homodimers and that the dimer is the relevant DNA-binding species .
 protein: dimer; protein: relevant DNA-binding species; protein: IBR/F; protein: homodimers
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: dimer; protein: relevant DNA-binding species; protein: IBR/F; protein: homodimers