Introduction -- The enteric nervous system (ENS) -- Ganglionated enteric plexuses -- Non-ganglionated enteric plexuses -- Morphological classifications of enteric neurons -- Material and methods -- Immunohistochemistry -- Immunocytochemistry -- Double labelling post mortem tracing -- Image aquisition of immunofluorescent specimens, counts, morphometry -- Three-dimensional(D-) reconstructions -- Chemical coding of Stach's neuron types in the pig -- Preliminary note: Cholinergic and nitrergic neurons -- Type I neurons -- Type II neurons -- Type III neurons -- Type IV neurons -- Type V neurons -- Type VI neurons -- Type VII neurons -- Dendritic type II neurons, mini neurons, giant neurons -- Morphological neuron types and their chemical coding in the human -- Nomenclature used for human enteric neurons -- Type II neurons -- Stubby (type I) neurons -- Spiny (type I) neurons -- Type V neurons -- Type III neurons -- Dendritic type II neurons -- Spiny neurons with main dendrites or human type VII neurons?- Discussion -- What does NF-immunohistochemistry achieve?- General remarks on equivalent neurons of different species -- Putative functional categories of human enteric neurons -- Plasticity -- Summary -- Acknowledgements -- References -- Subject Index. (will follow)