Cat#: DB 027
COS is a T-cell antigen also expressed by a range of neoplastic B-cells, e.g. B-cell chronic lymphocytic leukemia (B-CLL), B-cell small lymphocytic lymphoma (B-SLL), and mantle cell lymphoma. COS is expressed on T lymphocyte subsets and is modulated during cellular activation. COS does not react with granulocytes or monocytes.
Fixed-embedded human tonsil