12551
Unexpectedly, the CD4 silencer is also active in CD4+ CD8int/- cells of the thymus , implying that an anti-silencer may be required to resume CD4 expression in this cell population.
 cell type: CD4+ CD8int/- cells; protein: CD4; DNA: CD4 silencer
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: CD4+ CD8int/- cells, CD4, CD4 silencer 
Answer:
 cell type: CD4+ CD8int/- cells; protein: CD4; DNA: CD4 silencer