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Functional studies related to the observed alterations in the gut microbiome are warranted because the low abundance of bifidobacteria and butyrate - producing species could adversely affect the intestinal epithelial barrier function and inflammation , whereas the apparent importance of the Bacteroides genus in development of type 1 diabetes is insufficiently understood .
 Chemical: butyrate
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: butyrate