4973
This unidentified factor binds immediately 3' of the PU.1 /Elf-1 sites and appears to be myeloid cell specific .
 protein: /Elf-1; DNA: PU.1 /Elf-1 sites; protein: PU.1
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: /Elf-1, PU.1 /Elf-1 sites, PU.1 
Answer:
 protein: /Elf-1; DNA: PU.1 /Elf-1 sites; protein: PU.1