Electron Microscopy / DNA damage / Apoptosis / Multidisciplinary / DNA / Female / Animals / Male / Cell Death / Substantia nigra / Neurons / Tyrosine Hydroxylase / Rats / Time Course / Substantia nigra pars compacta (SNpc) / Female / Animals / Male / Cell Death / Substantia nigra / Neurons / Tyrosine Hydroxylase / Rats / Time Course / Substantia nigra pars compacta (SNpc)