From the reviews: "The book is well presented with good use of diagrams ... . There is a good mix of international authors with acknowledged leaders in the field being responsible for some key chapters. ... In summary this is a useful book describing the properties of a receptor that may well turn out to be a therapeutically important drug target with selective ligands already being evaluated in phase II trials for control of appetite." (R. G. Hill, British Journal of Clinical Pharmacology, May, 2011)