14642
The enhancer for the immunoglobulin mu heavy chain gene ( IgH ) activates a heterologous gene at the pre-B cell stage of B lymphocyte differentiation .
 DNA: enhancer; DNA: heterologous gene; protein: IgH; DNA: immunoglobulin mu heavy chain gene; cell type: B lymphocyte
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: enhancer, heterologous gene, IgH, immunoglobulin mu heavy chain gene, B lymphocyte 
Answer:
 DNA: enhancer; DNA: heterologous gene; protein: IgH; DNA: immunoglobulin mu heavy chain gene; cell type: B lymphocyte