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Furthermore, a specific induction of AhR during monocytic differentiation was investigated in HL60 and HEL cells .
 cell line: HL60; protein: AhR; cell line: HEL 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: HL60, AhR, HEL cells 
Answer:
 cell line: HL60; protein: AhR; cell line: HEL cells