G Protein-Coupled Receptors as Drug Targets: Analysis of Activation and Constitutive Activity. Methods and Principles in Medicinal Chemistry. Vol. 24 Edited by Roland Seifert and Thomas Wieland. Wiley-VCH, Weinheim, Germany. 2005. xxvii + 275 pp. 17.5 × 24.5 cm. ISBN 3527308199. $170.00.