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In preliminary studies, we have analyzed the hematopoietic growth factor ( HGF ) requirement of hematopoietic progenitor cells ( HPCs ) purified from embryonic-fetal liver ( FL ) and grown in fetal calf serum-supplemented (FCS+) clonogenic culture .
 cell type: HPCs; cell type: hematopoietic progenitor cells; protein: HGF; protein: hematopoietic growth factor
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: HPCs, hematopoietic progenitor cells, HGF, hematopoietic growth factor 
Answer:
 cell type: HPCs; cell type: hematopoietic progenitor cells; protein: HGF; protein: hematopoietic growth factor