26159
Results obtained showed that aberrant methylation of p15 and p16 genes were detected in 64 . 29 and 50 % of ovarian cancer patients , while E - cadherin hypermethylation was detected in 78 . 57 % of ovarian cancer patients .
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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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