Recently, many ground-breaking steps have been made towards  better understanding NO/cGMP/PKG pathways, its components, substrates, and their localization within a given cell. These advances were only possible due to the development of sophisticated new techniques in the field. In Guanylate Cyclase and Cyclic GMP: Methods and Protocols expert researchers in the field seek to provide an overview of novel techniques to identify various elements of the NO/cGMP/PKG pathway and further characterize their function, signaling, localization, and importance on a cellular level and in whole animal models providing a higher patho-/physiological integration and relevance.  Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and key tips on troubleshooting and avoiding known pitfalls.   Authoritative and practical, Guanylate Cyclase and Cyclic GMP: Methods and Protocols seeks to provide  scientist current methods and a useful guide towards the possibility to apply these techniques to their own research.