23983
It was hypothesized that wood smoke particulate and select chemical constituents thereof would also activate TRPA1 in lung cells , potentially explaining the adverse effects of wood and other forms of biomass smoke on the respiratory system .
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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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