Extra-synaptic localization of α-bungarotoxin receptors in cultured chick ciliary ganglion neurons

Surface [¹²⁵I]α-bungarotoxin receptors were localized on dissociated cultures of embryonic chick ciliary ganglion neurons by electron microscopic autoradiography. Grain density was 4–5-fold higher on cell body membrane versus neuritic process membrane, and there was no apparent concentration of grains at morphologically identifieble inter-neuronal synapses.