168681-AF-BIOTIN

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

Size

£876.00

SKU:: 168681-AF-BIOTIN
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:: C28/75
Format:: Supplied as a liquid in 10mM PBS. No preservative added. BSA-Free. Labeled with Biotin.
Extra Details:: Recognizes a glycoprotein of 44-88kDa, 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, ELISA, Flow Cytometry, Western Blot, Immunoprecipitation, Immunohistochemistry. Other applications not tested. Recommended Dilution: Flow Cytometry: 0.5-1ug/million cells Immunofluorescence: 0.5-1ug/ml Immunoprecipitation: 0.5-1ug/500ug protein lysate 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: Store product at 4°C if to be used immediately within two weeks. For long-term storage, aliquot to avoid repeated freezing and thawing and store at -20°C. Aliquots are stable at -20°C for 12 months after receipt. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Note: Applications are based on unconjugated antibody.

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