Tom Warren is a senior editor and author of Notepad, who has been covering all things Microsoft, PC, and tech for over 20 years. Microsoft Excel used to only allow two types of data: text and numbers.

Epigenetic mechanisms associated with DNA methylation of cytosine residues at CpG dinucleotides have a central role in normal human development and disease (Baylin and Jones, 2011). Advancements in ...