Discrete distributions of putative cholinergic and somatostatinergic amacrine cell dendrites in chicken retina. 
The distributions of putative cholinergic and somatostatinergic amacrine cells of the chicken retina were compared.  Acetylcholinesterase-positive amacrine cell bodies were concentrated at the border between the inner nuclear and plexiform layers.  Similar amacrine cell bodies were detected in a displaced position in the ganglion cell layer.  Both populations had dendrites joining the 4 bands of acetylcholinesterase activity in the inner plexiform layer.  The cell bodies of somatostatin-immunoreactive amacrine cells were distinct from the intensely acetylcholinesterase-positive cell bodies.  The immunoreactive terminal bands did not overlap the acetylcholinesterase-positive bands, except in the inner parts of the inner plexiform layer.