For research use only.
| Alternate Names | CD8A, MAL, T-cell surface glycoprotein CD8 alpha chain, T-lymphocyte differentiation antigen T8/Leu-2 |
| Clone No | |
| Leadtime | Order now, ship in 3 days |
| Background | CD8, also known as Lyt-2, Ly-2, or T8, consists of disulfide-linked α and β chains that form the α(CD8a)/β(CD8b) heterodimer and α/α homodimer. CD8a is a 34 kD protein that belongs to the immunoglobulin family. The CD8 α/β heterodimer is expressed on the surface of most thymocytes and a subset of mature TCR α/β T cells. CD8 expression on mature T cells is non-overlapping with CD4. The CD8 α/α homodimer is expressed on a subset of γ/δ TCR-bearing T cells, NK cells, intestinal intraepithelial lymphocytes, and lymphoid dendritic cells. CD8 is an antigen co-receptor on T cells that interacts with MHC class I on antigen-presenting cells or epithelial cells. CD8 promotes T cell activation through its association with the TCR complex and protein tyrosine kinase lck. |
| Abbre | CD8a |
| Swissprot | |
| Host | Rat |
| Reactivity | Mouse |
| Clonality | Monoclonal |
| Isotype | Rat IgG2a, κ |
| Isotype Control | E-AB-F09833D |
| Applications | FCM |
| Cellular Localization | Membrane |
| Form | Liquid |
| Concentration | 0.2 mg/mL |
| Conjugation | PE |
| Conjugation Information | PE is designed to be excited by the Blue (488 nm), Green (532 nm) and Yellow-Green (561 nm) lasers and detected using an optical filter centered near 575 nm (e.g., a 585/42 nm bandpass filter). |
| Spectrum | |
| Storage Buffer | Phosphate buffered solution, pH 7.2, containing 0.09% stabilizer and 1% protein protectant. |
| Storage | This product can be stored at 2-8°C for 12 months. Please protected from prolonged exposure to light and do not freeze. |
| Expiration Date | 12 months |
| Shipping | Ice bag |
Other Clones
1 Results
Other Formats
1 Results
APC
Biotin
Elab Fluor®488
Elab Fluor®647
Elab Fluor®700
Elab Fluor®Red 780
Elab Fluor®Violet 450
Elab Fluor®Violet 500
Elab Fluor®Violet 540
FITC
None (AF/LE)
PE
PE/Cyanine 5.5
PE/Cyanine 7
PE/Elab Fluor®594
PerCP
PerCP/Cyanine 5.5
Unconjugated
Q1:In flow cytometry experiment, is it possible to detecet cytokine without stimulation?
Usually, it is difficult to do so. It might be able to detect the biomarker in some treatment group, but the concentration will be lower than the detection limit in more groups.
Q2:Are CD8 and CD8α the same index?
Yes they are. CD8 and CD8α are widely used markers for identifying cytotoxic T lymphocytes (CTLs). CD8 plays an important role in mediating the recognition and excution funtions of CTLs. CD8α is a subunit of CD8 complex, which means the α chain, and it is quite important in the formation of the complex. CD8α chain not only participates in the binding with MHC-I molecules, but also regulates the activity of CTLs by interacting with other signal molecules. Therefore, the expression level and functional status of CD8α can be used for evaluating the activation and effection of CTLs, as well as CD8.
Q3:Why centrifuge before use?
During the transportation of antibodies, antibodies will stick to the tube wall or cap due to turbulence. So after receiving the antibodies, moderate centrifugation will collect the antibodies on the tube wall or cap to the bottom of the tube to avoid the loss of antibodies.
Q4:What is the difference between the test-package and the weight-package of flow antibody products?
The usage of test-package antibodies is well designed and verified there is no need for an extra dilution before use. The weight-package antibody has a higher concentration, and requires a titration process for a suitable usage amount.
Q5:What is the concentration of primary antibody?
Our antibodies are concentrated, and the final concentration of the antibodies is not only related to the concentration of the antibodies themselves, but also to the abundance of the target protein in the sample. Therefore, the recommended dilution ratio for the antibodies provided in our instructions is a range, and the final dilution ratio needs to be determined through pre-experiments.You can also consult our technical team to get a recommendation of a suitable dilution ratio for your experimental conditions.
Q6:What does Isotype Control do? How to choose a suitable isotype control antibody?
Isotype control antibodies are used as the basis for determining negative and positive cells. It is necessart as a gating helper especially for the indicators with low expression or continuous expression.
The Isotype control was purified from the serum of non-immunized animals, it should be the same species source, same immunoglobulin and subtype, same fluorescein label, same dose and concentration as the stained monoclonal antibody.Q7:What does IHC mean on the datasheet? Is it a frozen tissue section? How is it different from IHC-F?
IHC is an immunohistochemical experiment, and the sections used generally include IHC-P (paraffin tissue section) and IHC-F (frozen tissue section).
Q8:What auxiliary reagents are needed for staining?
For samples with erythrocyte, ACK lysis buffer (E-CK-A105) is needed;
For cells that are rich in Fc receptors, such as macrophages, Fc receptors blocking is necessary before staining with flow Antibody to reduce the non-specific signal. At present, we can provide human and mouse blocking agent, E-AB-F1236A Purified Anti-Human CD16 Antibody[3G8]. E-AB-F0997A Purified Anti-Mouse CD16/32 Antibody[2.4G2].
Cell staining buffer (E-CK-A107) is required in the process of cell staining.
For the detection of intracellular indexes, a fixation & permeabilization kit is needed (E-CK-A109) ; and for the detection of intranuclear indexes, a specific staining kit (E-CK-A108) is required.
Dead cell dyes are also used for flow cytometry of tissue samples such as tumors.Q9:What are the requirements for centrifuge usage when preparing samples?
The centrifugal force of the centrifuge does not exceed 300g, the centrifugal speed does not exceed 3, and the centrifugal speed does not exceed 1, so as to avoid cell damage.
Q10:What are host and reactivity respectively?
Host refers to the species from which antibodies originate. Reactivity refers to species that have been experimentally proven to bind specifically to our antibodies.
