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Mouse anti Human CD28

CAT: 0579-0281Size: 100 µgDry Ice: NoHazardous: No
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CAT#:0579-0281Size:100 µg
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24/48H Stock Items & 2 to 6 Weeks non Stock Items.
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Background
Anti-Human CD28 binds the 44kDa MW cell surface protein on the surface of most T cells. CD28 acts as the ligand for the B7/BB-1 molecule on the surface of activated B cells. B7/BB-1 costimulates T cells through CD28, along with CD2 and CD3.CD28 antigen is a disulfide-linked homodimeric glycoprotein. The CD28 antigen is present on approximately 60%-80% T lymphocytes (95% of CD4 and 50% of CD8 lymphocytes). CD28 regulates the expression of cytokines by T cells, not only IL-2, but also IL-1 alpha and CSF-1, usually synthesized by accessory cells. CD28 functions as a cell adhesion molecule (CAM) for certain T cell subsets.
CAS Number
9007-83-4
Synonyms
CD28
UniProt
P10747
Host
Mouse
Species Reactivity
Human
Isotype
IgG1
Clone
B-23
Conjugation
Unconjugated
Type
Single-Color Reagent
Source
Derived from the hybridization of mouse Sp2/O-Ag14 myeloma cells with spleen cells of BALB/c mice immunized with the HPB-ALL T-cell line.
Applications
Flow Cytometry
Field of Research
Flow Cytometry
Purification Method
Protein A/G Chromatography
Assay Principle
PBMC: Add10 µL of MAB/10^6 PBMC in 100 µL PBS. Mix gently and incubate for 15 minutes at 2º to 8ºC. Wash twice with PBS and analyze or fix with 0.5% v/v of paraformaldehyde in PBS and analyze. _x000D_ WHOLE BLOOD: Add 10 µL of MAB/100 µL of whole blood. Mix gently and incubate for 15 minutes at room temperature (20ºC). Lyse the whole blood. Wash once with PBS and analyze or fix with 0.5% v/v of paraformaldehyde in PBS and analyze. See instrument manufacturer’s instructions for Lysed Whole Blood and Immunofluorescence analysis with a flow cytometer or microscope.
Stability
See expiration date on vial
Concentration
See vial for Concentration
Form
Provided as solution in phosphate buffered saline with 0,08% sodium azide
Precautions
This product is intended FOR RESEARCH USE ONLY, and FOR TESTS IN VITRO, not for use in diagnostic or therapeutic procedures involving Humans or animals.
References & Citations
1. CD28 is an inducible T cell surface antigen that transduces a proliferative signal in CD3+ mature thymocytes. Turka LA; Ledbetter JA; Lee K; June CH; Thompson CB J Immunol 1990 Mar ;144(5):1646-53 _x000D_ 2. CD28 ligation in T-cell activation: evidence for two signal transduction pathways. Ledbetter JA; Imboden JB; Schieven GL; Grosmaire LS; Rabinovitch PS; Lindsten T; Thompson CB; June CH Blood 1990 Apr ;75(7):1531-9 _x000D_ 3. T-cell antigen CD28 mediates adhesion with B cells by interacting with activation antigen B7/BB-1. Linsley PS; Clark EA; Ledbetter JA Proc Natl Acad Sci U S A 1990 Ju;87(13):5031-5 _x000D_ 4. Role of the CD28 receptor in T-cell activation. June CH; Ledbetter JA; Linsley PS; Thompson CB Immunol Today 1990 Ju;11(6):211-6_x000D_ 5. Differences in surface phenotype and mechanism of action between alloantigen-specific CD8+ cytotoxic and suppressor T cell clones. Koide J; Engleman EG J Immunol 1990 Jan ;144(1):32-40 _x000D_ 6. Binding of the B cell activation antigen B7 to CD28 costimulates T cell proliferation and interleukin 2 mRNA accumulation. Linsley PS; Brady W; Grosmaire L; Aruffo A; Damle NK; Ledbetter JA J Exp Med 1991 Mar ;173(3):721-30 _x000D_ 7. The CD28 ligand B7/BB1 provides costimulatory signal for alloactivation of CD4+ T cells. Koulova L; Clark EA; Shu G; Dupont B J Exp Med 1991 Mar ;173(3):759-62
Shipping Conditions
Ambient Temperature
Storage Conditions
Product should be stored at -20ºC; Aliquot to avoid freeze/thaw cycles
Functional Analysis
Flow Cytometry Staining

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