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Here , we show that human Mesenchymal Stem / Stromal Cells ( hMSCs ) and TNF - alpha - stimulated gene 6 ( TSG - 6 ) , a protein produced by hMSCs in response to signals from injured tissues , delayed the onset of spontaneous autoimmune diabetes in NOD mice by inhibiting insulitis and augmenting regulatory T cells ( Tregs ) within the pancreas .
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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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