- DNA end labelling (TUNEL) in a 3 year old girl with Leigh syndrome and prevalent cortical involvement. Formichi, P., Malandrini, A., Battisti, C., Santorelli, F.M., Gambelli, S., Tripodi, S.A., Berti, G., Salvadori, C., Tessa, A., Federico, A. J. Neurol. Neurosurg. Psychiatr. (2004)