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A) DNA methylation at 20 CpG sites with epigenetic memory related to epithelium function. B–D) DNA methylation at CpG sites located within the promoters of RPTN, SPRR2A and CAT. Data represents mean±SD of duplicate experiments for ≥2 biological samples for each indicated cell type. One-way ANOVA, ****p<0.0001, *** p<0.001, **p<0.01, * p<0.05.
