Mice lacking the mitochondrial exonuclease MGME1 accumulate mtDNA deletions without developing progeria. - Matic S; Jiang M; Nicholls TJ; Uhler JP; Dirksen-Schwanenland C; Polosa PL; Simard ML; Li X; Atanassov I; Rackham O; Filipovska A; Stewart JB; et al. (Nature communications, 2018)