Immunohistochemistry (IHC) is a technique that uses antibodies to detect specific antigens in tissue sections. It is particularly useful in diagnosing skin cancers and inflammatory conditions. For example, IHC can differentiate between melanoma and benign melanocytic lesions by using markers like HMB-45, Melan-A, and S-100. In inflammatory conditions, IHC can identify specific immune cells, helping to understand the underlying pathology.
