13473
Truncation of the beta globin promoter led to a 2-3 fold increase in promoter activity .
 DNA: beta globin promoter
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: beta globin promoter 
Answer:
 DNA: beta globin promoter