Fig. 3.     A: Golgi impregnated cholinergic neuron (method of Gabbott and Somogyi, l984) located medial to the substriatal gray. Neuron in boxed area is shown under higher magnification in B and C. D: Electron micrograph showing gold deposits (arrows) in the perikaryon, in addition to heavy immunostaining for ChAT. E: Low magnification view of the identified neuron (# 1) in the electron microscope. Abbrev. CP = caudate putamen. Scale: B=10µm; E=2µm.