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To understand the role of MARs in IgH enhancer regulation , we have identified a novel MAR-binding protein , MAR-BP1 , from soluble nuclear matrix preparations based on its ability to bind to the MARs associated with the IgH enhancer .
 protein: IgH; DNA: IgH enhancer; protein: MARs; protein: MARs; protein: MAR-binding protein; DNA: IgH enhancer; protein: MAR-BP1; protein: IgH
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: IgH; DNA: IgH enhancer; protein: MARs; protein: MARs; protein: MAR-binding protein; DNA: IgH enhancer; protein: MAR-BP1; protein: IgH