9507
Relative affinities of transcriptional regulatory elements for their respective factor have been essentially studied by bandshift analysis .
 DNA: transcriptional regulatory elements
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: transcriptional regulatory elements 
Answer:
 DNA: transcriptional regulatory elements