1634
The observation that binding sites for the nuclear factor-mu negative regulator ( NF-muNR ) enhancer repressor overlap nuclear matrix attachment regions ( MARs ) in this enhancer has lead to the hypothesis that the cell type specificity of the enhancer might be controlled by regulating nuclear matrix attachment (Scheuermann, R. H., and Chen, U. (1989) Genes & Dev. 3, 1255-1266).
 protein: NF-muNR; protein: MARs; protein: nuclear factor-mu negative regulator; protein: nuclear matrix attachment regions; protein: nuclear factor-mu negative regulator ( NF-muNR ) enhancer repressor overlap nuclear matrix attachment regions; DNA: enhancer; DNA: 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: NF-muNR; protein: MARs; protein: nuclear factor-mu negative regulator; protein: nuclear matrix attachment regions; protein: nuclear factor-mu negative regulator ( NF-muNR ) enhancer repressor overlap nuclear matrix attachment regions; DNA: enhancer; DNA: enhancer