15873
On day 28 after a single instillation ( 1 mg / kg ) , three nanowires induced a Th2 - type inflammatory response together with the relative increase in CD4 ( + ) T cells , especially by 2HTO .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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