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Screening for genes with reduced expression caused by hypermethylation. (a) Venn diagram of the intersection of 2454 DMGs and 228 DEGs. (b)–(f) Genes with reduced expression may be caused by hypermethylation. Box plots of methylation levels and gene expression levels of the five genes (GSTO2, HUS1, INTS1, TMEM184A, and TMEM190) in the two groups are shown. Blue represents the H. pylori-positive group, and yellow represents the H. pylori-negative group.
