| 克隆类型 ： |
Rabbit Polyclonal IgG |
|
免 疫 原 ： |
Peptide derived from mouse CD28. |
|
纯化方式 ： |
Immunogen affinity purified |
|
缓 冲 液 ： |
PBS, pH 7.4(1%BSA and 0.1% Sodium azide) |
|
产品描述 ： |
Human CD28 antigen is a 44 kDa disulfide linked homodimeric T cell specific surface glycoprotein. It is a cell adhesion molecule of the immunoglobulin superfamily which is constitutively expressed on most peripheral blood T lymphocytes (approximately 95% of CD4+ cells and 50% of CD8+ cells). Mature thymocytes exhibit higher levels of CD28 than the immature cells. Activation of T cells results in enhanced CD28 expression. T cell activation requires two combined signals provided by antigen presenting cells. The first is mediated via the T cell receptor following its interaction with antigenic peptide MHC complexes, and the second is delivered by accessory or costimulating molecules through their counter receptors on T lymphocytes. CD28 bears structural homology to CTLA 4 which is expressed at very low levels on the surface of CD4+ and CD8+ peripheral blood cells only following activation. CD28 is the natural receptor for the B7/BB 1 ligand (CD80) a 55-60 kDa glycoprotein which is expressed on activated B lymphocytes, on dendritic cells and on interferon gamma treated monocytes. |
| 适用物种 ： |
Hu, Mo, Rat, Chi, Dog, Pig, Cow, Hor, |
| 应用说明 ： |
WB: 1:200-1:1000 E: 1:500-1:1000 IHC: 1:200-1:1000 IF: 1:100-1:500 |
| 别 名 ： |
CD 28; CD28 antigen; CD28 molecule; MGC138290; T cell antigen CD28; T cell specific surface glycoprotein; T cell specific surface glycoprotein CD28; Tp44. |
| 保存条件 ： |
Store at -20°C for one year. Avoid repeated freeze-thaw cycles. At 4°C for 2-3 weeks after reconstituted. |
| 标 记 物 ： |
PLLABS公司可供应生物素、辣根过氧化物酶、荧光素标记抗体 |
|
产品说明 ： |
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