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In striking contrast to the mouse Ig heavy-chain enhancer , in which the octamer motif acts as a B-cell-specific enhancer element , the human enhancer contains an octamerlike sequence with one base substitution which bound octamer-binding proteins with only very low affinity and showed no enhancer activity of its own.
 DNA: human enhancer; DNA: octamerlike sequence; DNA: B-cell-specific enhancer element; DNA: mouse Ig heavy-chain enhancer; DNA: octamer motif; protein: octamer-binding proteins
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:
 DNA: human enhancer; DNA: octamerlike sequence; DNA: B-cell-specific enhancer element; DNA: mouse Ig heavy-chain enhancer; DNA: octamer motif; protein: octamer-binding proteins