1638
Indeed, binding of the IgH enhancer to either intact nuclear matrix preparations or to MAR-BP1 is mutually exclusive to NF-muNR binding .
 protein: IgH; protein: MAR-BP1; protein: NF-muNR; DNA: IgH enhancer
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; protein: MAR-BP1; protein: NF-muNR; DNA: IgH enhancer