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Methylation-variation profiles of 14 selected genes examined in noncancerous gastric mucosa of cancer and noncancer tissue samples
Percentages are indicated in parentheses. The frequencies of the over- and under-methylated genes were compared between normal stomach samples and either ulcer, non-invasive cancer, or invasive cancer patients using a Fisher's exact test.
*P values less than 0.01.
U, undermethylation; I ,intermediate-methylation; O, overmethylation.
