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The electron spin resonance study also demonstrated that the formation of superoxide - DMPO spin adduct was strongly inhibited by a selective cyclooxygenase - 2 inhibitor , etodolac , in a concentration - dependent manner .
 GENE: cyclooxygenase - 2
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: cyclooxygenase - 2