Clone: CD28.2.
Conjugate: FITC.
Immunogen: Human CD28 Transfected Cell Line.
Storage Buffer: The reagent is provided in aqueous buffered solution containing protein stabilizer, and ≤0.09% sodium azide (NaN3).
The monoclonal antibody is directed against the CD28 antigen, which is weakly expressed on human T cells in the resting period and strongly on human cytotoxic/suppressor T cells (molecular mass 44 kDa). The antibody also reacts with 30% of human thymocytes and adult cell leukaemia. It does not react with normal human B lymphocytes, monocytes, granulocytes, platelets, erythrocytes, common acute lymphoblastic leukaemia cells or acute myelocytic leukaemia cells.