What is the Role of Immunohistochemistry in Pathology?
Immunohistochemistry (IHC) is a technique used to identify specific antigens in tissues using antibodies. It is invaluable in diagnosing diseases, especially cancers, by revealing the presence and distribution of proteins. For example, IHC can differentiate between types of carcinomas by staining for specific markers like HER2/neu in breast cancer or CD20 in lymphomas.