8727
We found that: (i) both CTCF mRNA and protein are down-regulated during terminal differentiation in most cell lines tested; (ii) CTCF down-regulation is retarded and less pronounced than that of c-myc ; (iii) CTCF protein is differentially phosphorylated and the phosphorylation profiles depend on the differentiation pathway .
 protein: CTCF protein; DNA: c-myc; protein: CTCF; protein: CTCF; protein: CTCF; RNA: CTCF mRNA
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 protein, c-myc, CTCF, CTCF, CTCF, CTCF mRNA 
Answer:
 protein: CTCF protein; DNA: c-myc; protein: CTCF; protein: CTCF; protein: CTCF; RNA: CTCF mRNA