Figure 1From: The interface between cholinergic pathways and the immune system and its relevance to arthritis Schematic summary of the types of cholinergic pathway. The following cholinergic pathways are highlighted in green in successive diagrams: (i) central nervous, (ii) preganglionic and postganglionic parasympathetic (cranial and sacral), (iii) preganglionic and postganglionic sympathetic, (iv) somatic motoneuron and (v) non-neural (showing an example of a cholinergic cell-cell interaction). All somatic motoneurons, all sympathetic and parasympathetic preganglionic neurons and most parasympathetic postganglionic neurons are cholinergic; the remainder are subsets. ChAT+ = choline acetyl transferase-positive; that is, acetylcholine (ACh) expressing.Back to article page