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Cobalt chloride , a typical HIF activator , induced the gene expression of CAR - target genes , including cyp2b9 and cyp2b10 , an accumulation of nuclear CAR and an increase in the PB - responsive enhancer module - mediated transactivation in the mouse liver .
 Chemical: Cobalt chloride
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Cobalt chloride 
Answer:
 Chemical: Cobalt chloride