Exocytosis and endocytosis remain among the most popular subjects in biology and biomedical sciences. Tremendous progress in understanding these complex intracellular processes has been achieved by employing a wide array of research tools ranging from classical biochemical methods to modern imaging techniques. In this book, skilled experts provide the most up-to-date, step-by-step laboratory protocols for examining molecular machinery and biological functions of exocytosis and endocytosis in vitro and in vivo. The volume presents detailed lists of tested reagents that really work, and notes on troubleshooting from leading laboratories in the field. Insightful to both newcomers and seasoned professionals, the book offers a unique and highly practical guide to versatile laboratory tools developed to study various aspects of intracellular vesicle trafficking in simple model systems and living organisms.