15096
Recent studies showed that beta - cell - specific Atg7 - null mice , when bred with ob / ob mice , developed severe diabetes , suggesting that autophagy - deficient beta - cells can handle basal metabolic stress but have problems dealing with increased metabolic stress .
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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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