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  6. Invitrogen™ CD28 Monoclonal Antibody (CD28.2), Functional Grade, eBioscience™, Invitrogen™

Invitrogen™ CD28 Monoclonal Antibody (CD28.2), Functional Grade, eBioscience™, Invitrogen™
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Product Code. 15278417
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Product Code. 15278417 Supplier Invitrogen™ Supplier No. 16028981

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110.96 EUR valid until 2026-03-27
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Description

Mouse Monoclonal Antibody

Description: The CD28.2 monoclonal antibody reacts with the human CD28 molecule, a 44 kDa homodimer expressed by thymocytes, mature T cells and plasma cells. CD28 is a ligand for CD80 (B7-1) and CD86 (B7-2) and is a potent co-stimulator of T cells. Signaling through CD28 augments IL-2 and IL-2 receptor expression as well as cytotoxicity of CD3-activated T cells. Applications Reported: The CD28.2 antibody has been reported for use in flow cytometric analysis. CD28.2 has also been reported in costimulation of T cells in in vitro functional assays. Applications Tested: TheCD28.2 antibody has been tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at less than or equal to 1 μg per test. A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. Storage and handling: Use in a sterile environment. Filtration: 0.2 μm post-manufacturing filtered. Purity: Greater than 90%, as determined by SDS-PAGE. Endotoxin Level: Less than 0.001 ng/μg antibody, as determined by LAL assay. Aggregation: Less than 10%, as determined by HPLC.

CD28 antigen is a 44 kDa disulfide linked homodimeric T cell specific surface glycoprotein. CD28 is a cell adhesion molecule of the immunoglobulin superfamily which is constitutively expressed on most peripheral blood T lymphocytes. Moreover, CD28 is the critical T cell costimulatory receptor that provides the cell the important second activation signal by binding CD80 and CD86 which are expressed by antigen presenting cells. In addition to its co-stimulation role, CD28 functions by preventing T cells from entering an anergic-hyporesponsive state or from undergoing premature apoptotic cell death. In murine peripheral lymphoid organs and in the blood, all CD4+ and CD8+ T cells express CD28. In the thymus, CD28 expression is highest on immature CD3-, CD8+ and CD4+8+ cells, and on CD4-8- cells that express alpha/beta and gamma/delta TCR. The level of CD28 on mature CD4+ and CD8+ alpha/beta TCR+ thymocytes is two- to fourfold lower than on the immature cells. Diseases associated with CD28 dysfunction include mycosis fungiodes and Sezary's Disease.
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Specifications

Antigen CD28
Applications Flow Cytometry, Functional Assay
Classification Monoclonal
Clone CD28.2
Concentration 1 mg/mL
Conjugate Functional Grade
Formulation PBS with no preservative; pH 7.2
Gene Cd28
Gene Accession No. P10747
Gene Alias antigen CD28; CD28; CD28 antigen; CD28 antigen (Tp44); CD28 isoform; CD28 isoform 2; Cd28 molecule; CD28 precursor protein; CD28 protein; CD28 protein precursor; CD28RNA; cell surface protein; CHT28; contains partial extracellular domain; costimulatory molecule B7 receptor CD28; EGK_04709; MGC138290; sCD28; soluble CD28; T44; T-cell costimulatory molecule CD28; T-cell costimulatory molecule Tp44; T-cell-specific surface glycoprotein CD28; T-cell-specific surface glycoprotein CD28 homolog; TP44
Gene Symbols Cd28
Host Species Mouse
Purification Method Affinity chromatography
Quantity 50 μg
Regulatory Status RUO
Primary or Secondary Primary
Gene ID (Entrez) 940
Target Species Human
Content And Storage 4°C
Product Type Antibody
Form Liquid
Isotype IgG1 κ
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For Research Use Only.

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