6496
To determine whether it is possible to artificially enhance the opening of the chromatin structure of a minimal beta-globin promoter , we placed a 101bp, erythroid-specific DNase 1 hypersensitive site-forming element ( HSFE ) immediately upstream of the beta-globin promoter and gene .
 DNA: erythroid-specific DNase 1 hypersensitive site-forming element; DNA: minimal beta-globin promoter; DNA: HSFE
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: erythroid-specific DNase 1 hypersensitive site-forming element, minimal beta-globin promoter, HSFE 
Answer:
 DNA: erythroid-specific DNase 1 hypersensitive site-forming element; DNA: minimal beta-globin promoter; DNA: HSFE