Muscle biopsy of a MERRF patient presenting with COX deficient (A) and intense SDH-positive (B) RRF. (C) Neck lipoma in a 67-year-old MERRF patient. (D) Lys tRNA highlighting the most frequent mutations associated with MERRF or MERF-Like syndrome.
EEG in adult patients with MERRF. (A, B) Generalized spike and waves, as well as myoclonus, during SLI. (C, D) Paroxysmal activity in the temporal region in both hemispheres with right prevalence.