Synaptic and non-synaptic acetylcholinesterase activity in the electroplaque of Mormyrid fishes.

Electron microscopical study of AChE localization in the Mormyrid electric organ shows intense enzymatic activity in the synaptic region of the pedicle and a clearly recognizable enzymatic activity on the non-synaptic surface of the pedicle and on the anterior non-innervated face of the electroplaque.