Enzymatic Immunohistochemistry.

Immunohistochemistry (IHC) is a powerful laboratory technique that is widely used in a variety of settings, including clinical medicine and research. Enzymatic immunohistochemistry refers to the process of detecting cell surface proteins or antigens using enzyme-labeled antibodies. The site and specificity of the antibody binding may be identified using direct labeling techniques or through secondary labeling methods. The antibody-antigen interaction is ultimately visualized using a chromogenic detection process, in which the enzyme conjugated to the antibody cleaves a substrate to produce a stable, colored precipitate.