For a previous Nature study, released in March 2010, the team had collected and sequenced mitochondrial DNA, or mtDNA, from X-woman's finger.

Objective to investigate the relationships between skin photoaging and point mutations in mitochondrial DNA (mtDNA) control region for replication of dermal fibroblast.

Objective to investigate the effects of hemorrhagic shock on the structure and function of mitochondrial DNA (mtDNA) encoding Cytochrome Oxidase genes in intestinal epithelial cells.