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We present evidence that the development of thymic DC and of T-lineage cells is linked via a common precursor at an early stage of thymocyte development .
 cell type: thymic DC; cell type: T-lineage 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: thymic DC, T-lineage cells 
Answer:
 cell type: thymic DC; cell type: T-lineage cells