Clone Number: CD28.2
Immunogen: DC28.1.3.3 murine T cell hybridoma transfected with human CD28 cDNA
Concentration: 1 mg/ml
Format: Purified by protein-A affinity chromatography.
Storage buffer: Phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide
Additional info: CD28 is the critical T cell costimulatory receptor which provides to the cell the important second activation signal by binding CD80 and CD86 that are expressed by antigen presenting cells. Besides its costimulation role CD28 functions in preventing T cells from anergic hyporesponsive state or from undergoing premature apoptotic cell death. CD28 is also expressed on human fetal NK cells and some NK cell lines, whereas on murine NK cells the CD28 expression is much broader.SpecificityThe antibody MEM-92 reacts with an extracellular epitope on epsilon chain of human CD3 complex, a part of a bigger multisubunit complex of the T cell receptor (CD3/TCR) expressed on peripheral blood T lymphocytes and mature thymocytes.Application detailsFlow cytometry: Recommended dilution: 1-12 µg/ml