Acetylcholine, a ubiquitous signalling substance

This book presents an up-to-date review concerning acetylcholine, a messenger substance which is produced transiently in practically all living organisms, from bacteria to human beings. High acetylcholine concentrations have been encountered in growing parts of plants, in the royal jelly of bees, and in the human placenta. In vertebrates, many non-neuronal cells, such as epithelial cells, endothelial cells, immune cells or spermatozoids, secrete acetylcholine in response to specific signals.