12224
T-lineage precursor populations from the adult mouse thymus , prior to T-cell receptor gene rearrangement , display a capacity to produce DC as well as T cells in the thymus , and are very efficient precursors of DC in culture.
 cell type: DC; cell type: DC; cell type: T cells
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: DC, DC, T cells 
Answer:
 cell type: DC; cell type: DC; cell type: T cells