Neurosecretory epithelial cells (NEC's) in the airways and carotid labyrinth of aquatic vertebrates : morphology, distribution, innervation and function -- Neurosecretory cells (NEC's) in the lung of amphibians and accessory respiratory organs of the air-breathing fishes and in amphibian carotid labyrinth : structural morphology and function -- Neuroepithelial bodies (NEB's) in the lung of reptiles : structural morphology, immunohistochemistry and function -- Pulmonary neuroepithelial cells in mammals : structure, molecular markers, ontogeny and functions -- Solitary chemosensory cells in the airways of mammals : distribution, immunocytochemistry, fine structure and function.