1055
Notably, we do not see particularly strong transcription when the immunoglobulin kappa enhancer (or the immunoglobulin heavy chain enhancer ) is used to activate a kappa gene promoter .
 DNA: immunoglobulin heavy chain enhancer; protein: immunoglobulin heavy chain; DNA: immunoglobulin kappa enhancer; DNA: promoter
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: immunoglobulin heavy chain enhancer; protein: immunoglobulin heavy chain; DNA: immunoglobulin kappa enhancer; DNA: promoter