Test Details: Immunohistochemical testing is carried out on biopsy/resected tissue specimen. This testing helps to identify specific antigens (proteins) within tissue sections utilizing an antigen-specific antibody. CD43 (also known as sialophorin) is expressed on T-/NK-lymphocytes, cells of myeloid lineage, plasma cells, and tumours originating from these cells. It is mainly expressed in T-/NK-cell lymphomas B-ALL, Burkitt lymphoma, mantle cell lymphoma, marginal zone lymphoma, granulocytic (myeloid) sarcoma, adenoid cystic carcinoma.