The problem of identifying cholinergic neurones in the retina.
D018678:Cholinergic Agents; D059329:Cholinergic Neurons; D006652:Histological Techniques; D012160:Retina / Q000294:innervation*; D013564:Sympathetic Nervous System / Q000033:anatomy & histology*
D018678:Cholinergic Agents
RETINA/innervation; SYMPATHETIC NERVOUS SYSTEM/anatomy and histology