Leading researchers and clinical investigators describe their best cutting-edge techniques for studying, at both the molecular and biochemical levels, the defects in insulin production and action associated with diabetes. Written in step-by-step detail to ensure ready reproducibility and robust results, these techniques allow investigators, both novices and those already active in the field, to study every major facet of insulin production and action. Each protocol includes an introduction to the technique, an explanation of its application, and a list of materials. Practical notes discuss how to avoid pitfalls, as well as how to adapt the methods to your own research.