CD28 (T-cell-specific surface glycoprotein CD28, Tp44)

Size

£422.00

SKU:: 168682
Purity:: Purified by Protein A/G affinity chromatography.
Storage Conditions:: -20°C
Supplier:: United States Biological
Host:: Mouse
Immunogen:: Recombinant human CD28 protein. Cellular Localization: Cell surface
Clone:: C28/77
Format:: Supplied as a liquid in 10mM PBS, 0.05% BSA, 0.05% sodium azide. Also available without BSA and azide, see 168682-AF.
Extra Details:: Recognizes a glycoprotein of 44-88kD, which is identified as CD28. It is the critical T-cell co-stimulatory 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 co-stimulation 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. Applications: Suitable for use in Immunofluorescence, Flow Cytometry and Immunohistochemistry. Other applications not tested. Recommended Dilution: Flow Cytometry: 0.5-1ug/million cells Immunofluorescence: 0.5-1ug/ml Immunohistochemistry: Frozen & Formalin-fixed: 0.5-1ug/ml for 30 minutes at RT (Staining of formalin-fixed tissues is enhanced by boiling tissue sections in 1mM EDTA Buffer, pH 8.5-9.5, for 10-20 min followed by cooling at RT for 20 minutes Optimal dilutions to be determined by the researcher. Positive Control: Jurkat cells or human lymph nodes and tonsils. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Shipping Conditions:: Blue Ice