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A factor known to bind to endogenous Ig heavy chain enhancer only in lymphocytes is a ubiquitously active transcription factor .
 cell type: lymphocytes; DNA: endogenous Ig heavy chain enhancer; protein: ubiquitously active transcription factor
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:
 cell type: lymphocytes; DNA: endogenous Ig heavy chain enhancer; protein: ubiquitously active transcription factor