Ultrastructural GABA immunocytochemistry in the mossy fiber terminals of Wistar and genetic absence epileptic rats receiving amygdaloid kindling stimulations

► High GABA in the mossy fiber terminals of sham-operated GAERS may be the reason for resistance to kindling. ► Increased GABA in the mossy fiber terminals of stimulated Wistar rats may be a result of a protective mechanism. ► Our findings address anti-epileptic mechanisms in Wistar rats and GAERS.