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During the burst period ( approximately 5 - 10 min ) , local blood H2O2 concentrations and xanthine oxidase activities were highly correlated ( r = 0 . 999 ) .
 GENE: xanthine oxidase
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: xanthine oxidase