CD43 (SP55) Rabbit Monoclonal Antibody

CD43, also called leukosialin, is expressed on the surface of all leukocytes except for some resting B-cells. It appears to function as an anti-adhesion molecule, mediating repulsion amongst leukocytes. CD43 expression in lymphomas is highly correlated with CD5; thus most T-cell malignancies and a group of small lymphocyte B-cell malignancies [CLL/ SLL, mantle cell lymphoma (MCL), prolymphocytic leukemia] are often positive, while follicular lymphoma (FL) is usually negative. Anti-CD43 is less useful as a lineage marker, but is a sensitive indicator of aberrant B-cell populations. From 70 to 90% of T-cell lymphomas are labeled with this antibody. Plasmacytoma/myeloma and mast cell disease are also labeled with this antibody. No reactivity has been observed with reactive B-cells.

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and <0.1% Sodium Azide

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CD43 Positive Control Slides, Product No. 143S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

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