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The selenium level and glutathione peroxidase activity in the blood , liver , and stomach mucosa were significantly higher in the high - selenium diet group than in the low - selenium diet group .
 GENE: glutathione peroxidase
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: glutathione peroxidase