10769
In vivo genomic DMS footprinting revealed upstream of the major transcription initiation sites , the presence of at least three protein binding sites , two of which were constitutively occupied.
 DNA: transcription initiation sites; DNA: protein binding sites
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: transcription initiation sites, protein binding sites 
Answer:
 DNA: transcription initiation sites; DNA: protein binding sites