CD21 Lymphoid Architecture Test - Immunohistochemistry (IHC) for CD21

Immunohistochemistry for the CD21 marker aims to detect the CD21 protein (Complement Receptor 2), which is primarily expressed on Follicular Dendritic Cells (FDCs) and mature B-cells. It is an important tissue marker for identifying the follicular network in lymphoid organs, assessing the integrity or disruption of lymphoid follicle structure, and aiding in the diagnosis of certain lymphomas.