Expression of neuronal markers in the AVCN after cochlea removal in bcl-2-overexpressing animals. P5 animals underwent unilateral cochlea removal and survived 3 weeks.a, b, AVCN neurons demonstrate expression of NSE both ipsilateral and contralateral to cochlea removal. c, d, AVCN neurons demonstrate expression of α-neurofilament (α-NF) both ipsilateral and contralateral to cochlea removal. e, f, AVCN neurons demonstrate expression of NeuN both ipsilateral and contralateral to cochlea removal. All photomicrographs are at the same magnification.