KLRG1 identifies regulatory T cells with mitochondrial alterations that accumulate with aging - Soto-Heredero, G; Gabandé-Rodríguez, E; Carrasco, E; Escrig-Larena, JI; de las Heras, MMG; Delgado-Pulido, S; Francos-Quijorna, I; Blanco, EM; Fernández-Almeida, A; Abia, D; Rodríguez, MJ; Fernández-Díaz, CM; et al. (Nature Aging, 2025)