Presents the elements of immunohistochemistry in the context of the "total test". It deals logically with issues of test selection, reagent selection and quantification, protocols and methods, controls, results, interpretation, in situ hybridization, reporting, and significance. In each chapter, readers will find infectious diseases and prognostic markers and a molecular morphology perspective, focusing on DNA, RNA, and protein. Integrates infectious diseases and prognostic markers into each chapter, offering complete diagnostic coverage of any given organ system.