8770
Functional analyses of DNA fragments containing the TATA element and the identification of a DNase I-hypersensitive chromatin site ( HS 1 ) in close proximity to the TATA box suggest that the identified TATA motif is important for elk-1 transcription in vivo.
 DNA: elk-1; DNA: TATA element; DNA: TATA motif; DNA: DNA fragments; DNA: TATA box; DNA: HS 1; DNA: DNase I-hypersensitive chromatin site
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: elk-1, TATA element, TATA motif, DNA fragments, TATA box, HS 1, DNase I-hypersensitive chromatin site 
Answer:
 DNA: elk-1; DNA: TATA element; DNA: TATA motif; DNA: DNA fragments; DNA: TATA box; DNA: HS 1; DNA: DNase I-hypersensitive chromatin site