9237
Bipotential T/natural killer (NK) progenitor cells are present in the human thymus .
 cell type: Bipotential T/natural killer (NK) 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: Bipotential T/natural killer (NK) progenitor cells 
Answer:
 cell type: Bipotential T/natural killer (NK) progenitor cells