Name: PE/iFluor® 700 Anti-human CD28 Antibody *CD28.2*
Brand: AAT Bioquest
SKU: 102801X0
Availability: InStock

PE/iFluor® 700 Anti-human CD28 Antibody

CD28.2

CD28.2 is an anti-human monoclonal antibody that forms an immune complex with the CD28 antigen. CD28 (sometimes called T44) is a 44 kD member of the Ig superfamily that is located on the surface of cells such as T cells. CD28 acts in essential cellular pathways, in particular, the cell surface receptor signaling pathway, T cell receptor signaling pathway and apoptotic signaling pathway. Furthermore, in some organisms, it positively regulates isotype switching to IgG isotypes, is an enhancer of interleukin-4 production and upregulates translation. From a research standpoint, it is of biological interest due to its association with vital macromolecules/ligands such as PI3-kinase, CD80 and CD86. CD28 is a very popular antibody target, with over 30000 publications in the last decade. CD28 is essential for costimulatory molecules and immunology research, typically serving as a phenotypic marker for differentiating cell types in flow cytometric applications. This antibody was purified through affinity chromatography and conjugated to PE/iFluor® 700 (ex/em = 566/708 nm). It is compatible with the 561 nm laser and 702/85 nm bandpass filter (for example, as in the Luminex Amnis FlowSight).

Protocol

COA

Catalog	Size	Price
102801X0	25 tests	Price
102801X1	100 tests	Price
102801X2	500 tests	Price

Conjugation

We provide custom conjugation services for this antibody (e.g. labeling of cd28 antibody with HRP). A list of available labels can be found in the table below:

Label Type	Available Labels
AF	AF350, AF488, AF555, AF594, AF647, AF680, AF700, AF750
Proteins	HRP, Alkaline Phosphatase, Streptavidin
Tandems	APC, APC/Cy7, APC/AF750, APC/iFluor™ 700, APC/iFluor™ 750, PE, PE/Cy5, PE/Cy7, PE/AF610, PE/AF700, PE/iFluor™ 594, PE/iFluor™ 647, PE/iFluor™ 700, PE/iFluor™ 750, PE/Texas Red®, PerCP, PerCP/Cy5.5
Small Molecules	Biotin
Traditional Dyes	FITC (fluorescein), TRITC, PacBlue, PacOrange, Cy3, Cy5
iFluor	350, 405, 430, 450, 488, 514, 532, 546, 555, 560, 568, 594, 610, 633, 647, 660, 670, 680, 700, 710, 750, 790, 800, 810, 820, 840, 860, A7
mFluor	UV375, UV460, Violet 450, Violet 500, Violet 510, Violet 540, Blue 570, Green 620, Red 700, Red 780

For additional information about custom conjugations, please consult our services page

here

Antibody properties

Other names	Tp44, T44
Clone	CD28.2
Host	Mouse
Reactivity	Human

Spectral properties

Absorbance (nm)	566
Extinction coefficient (cm ^-1 M ^-1)	1960000
Excitation (nm)	565
Emission (nm)	708

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22

Documents

Protocol
Safety Data Sheet
Safety Data Sheet
Safety Data Sheet
Certificate of Analysis

Telephone
Fax
Email	sales@aatbio.com
International	See distributors
Bulk request	Inquire
Custom size	Inquire
Technical Support	Contact us
Request quotation	Request
Purchase order	Send to sales@aatbio.com
Shipping	Standard overnight for United States, inquire for international

Page updated on December 21, 2025