|Flow Cytometry (Flow)||1:50-1:100|
|Functional Assay (FN)||Assay Dependent|
|Immunohistochemistry (Frozen) (IHC (F))||Assay Dependent|
|Tested Species reactivity||Human|
|Host / Isotype||Rat / IgG2b|
|Immunogen||Human peripheral blood T-cells|
|Storage conditions||-20° C, Avoid Freeze/Thaw Cycles|
This product is a low-endotoxin, preservative-free formulation. Endotoxin level is <0.01 EU/ug.
For FACS analysis, use 10ul of the suggested working dilution to label 1x10^6 cells in 100ul.
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.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: CD28; CD28 antigen; MGC138290; T-cell-specific surface glycoprotein CD28; TP44
Gene Aliases: CD28; Tp44
UniProt ID: (Human) P10747
Entrez Gene ID: (Human) 940
If an Invitrogen™ antibody doesn’t perform as described on our website or datasheet, we’ll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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