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To determine whether enhancer elements in addition to the highly conserved octamer (OCTA)-nucleotide motif are important for lymphoid-specific expression of the immunoglobulin heavy-chain (IgH) gene , we have investigated the effect of mutating the binding site for a putative additional lymphoid-specific transcription factor , designated NF-microB , in the murine IgH enhancer .
 DNA: murine IgH enhancer; protein: putative additional lymphoid-specific transcription factor; DNA: octamer (OCTA)-nucleotide motif; protein: NF-microB; DNA: enhancer elements; DNA: immunoglobulin heavy-chain (IgH) gene; DNA: binding site
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: murine IgH enhancer; protein: putative additional lymphoid-specific transcription factor; DNA: octamer (OCTA)-nucleotide motif; protein: NF-microB; DNA: enhancer elements; DNA: immunoglobulin heavy-chain (IgH) gene; DNA: binding site