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However , the 5 - year survival rate of patients with high MMP - 9 protein expression were lower than those with low expression ( 19 vs . 4 . 7 % , p < 0 . 05 ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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