Mapping DNA's hidden switches: A methylation atlas
Researchers have developed a comprehensive atlas that maps DNA methylation—a critical chemical modification governing gene activity—across 39 human cell types, revealing a complex landscape of epigenetic regulation. The study identified over 34,000 genomic regions exhibiting distinct ON/OFF methylation patterns at the two copies of the genome we inherited from our parents, a phenomenon known as allele-specific methylation. Some of these methylation changes are caused by genetic differences in genomic sequence of DNA, while others are due to parental imprinting—a ...















