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Furthermore , inhibiting the IL - 1 beta pathway using a neutralizing antibody and macrophages from IL1 receptor knockout mice blocked the conditioned medium - induced upregulation of pro - inflammatory genes and downregulation of pro - healing factors .
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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:
 None