What is the difference between a CpG unit and CpG site?
• A CpG site is a single CpG dinucleotide. A CpG unit may contain one or more CpG sites. If two CpG sites exist on the same CpG unit, there is no way to unambiguously differentiate between the two with our chemistry. Our data analysis software will specify the same percentage of methylation for both CpG sites on the CpG unit.