4129
Precise alignment of sites required for mu enhancer activation in B cells .
 DNA: alignment of sites; cell type: B cells; DNA: mu enhancer
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: alignment of sites, B cells, mu enhancer 
Answer:
 DNA: alignment of sites; cell type: B cells; DNA: mu enhancer