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However, despite its ability to activate transcription of a transfected reporter gene , the factor is apparently unable to bind to the endogenous Ig heavy chain enhancer in non- lymphoid cells : In previous experiments by others, the characteristic in vivo footprint of this factor, designated NF-muE3 , was detected in B cells but not in non-B cells .
 protein: NF-muE3; cell type: B cells; cell type: lymphoid cells; DNA: transfected reporter gene; DNA: Ig heavy chain enhancer; cell type: non- lymphoid cells; cell type: non-B cells; DNA: endogenous Ig heavy chain 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-muE3; cell type: B cells; cell type: lymphoid cells; DNA: transfected reporter gene; DNA: Ig heavy chain enhancer; cell type: non- lymphoid cells; cell type: non-B cells; DNA: endogenous Ig heavy chain enhancer