8725
Although CTCF has been characterized in some detail, there is very little information about the regulation of CTCF activity .
 protein: CTCF; protein: CTCF
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: CTCF, CTCF 
Answer:
 protein: CTCF; protein: CTCF