445
The transcriptional enhancer located in the first intron of the immunoglobulin heavy chain constant region is a major determinant of B-cell-specific expression of immunoglobulin genes .
 DNA: transcriptional enhancer; DNA: immunoglobulin genes; DNA: immunoglobulin heavy chain constant region
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: transcriptional enhancer; DNA: immunoglobulin genes; DNA: immunoglobulin heavy chain constant region