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We developed unicellular culture systems for unilineage differentiation of purified hematopoietic progenitor cells followed by daughter cell analysis at cellular and molecular level.
 cell type: purified hematopoietic progenitor cells; cell type: progenitor 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: purified hematopoietic progenitor cells, progenitor cells 
Answer:
 cell type: purified hematopoietic progenitor cells; cell type: progenitor cells