SKU: 70553650949

Alexa Fluor® 647 Mouse Anti-Human CD28 Antibody (S-R547)

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Description

Alexa Fluor® 647 Mouse Anti-Human CD28 Antibody (S-R547)Product Specification Host Mouse Antigen CD28 Synonyms T cell specific surface glycoprotein CD28; TP44 Location Cell membrane Accession P10747 Clone Number S R547 Antibody Type Mouse mAb Isotype IgG1 Application FCM Reactivity Hu Positive Sample human peripheral blood cells Purification Protein G Concentration 0. 02mg ml Conjugation Alexa Fluor 647 Physical Appearance Liquid Storage Buffer PBS, 25% Glycerol, 1% BSA, 0. 3% Proclin 300 Stability &

Product Specification


Host Mouse
Antigen CD28
Synonyms T-cell-specific surface glycoprotein CD28; TP44
Location Cell membrane
Accession P10747
Clone Number S-R547
Antibody Type Mouse mAb
Isotype IgG1
Application FCM
Reactivity Hu
Positive Sample human peripheral blood cells
Purification Protein G
Concentration 0.02mg/ml
Conjugation Alexa Fluor® 647
Physical Appearance Liquid
Storage Buffer

PBS, 25% Glycerol, 1% BSA, 0.3% Proclin 300

Stability & Storage 12 months from date of receipt / reconstitution, 2 to 8 °C as supplied.

Dilution


application dilution species
FCM 5μl per million cells in 100μl volume Hu

Background

CD28, also known as the T-cell-specific surface glycoprotein CD28, is a protein encoded by the CD28 gene in humans. It is a glycoprotein that is constitutively expressed on both resting and activated T cells. CD28 plays a crucial role in T cell activation and signaling, providing essential co-stimulatory signals required for T cell activation, proliferation, and cytokine production. It enhances the production of IL4 and IL10 in T cells in conjunction with TCR/CD3 ligation and CD40L co-stimulation. CD28 interacts with its ligands, CD80 (B7-1) and CD86 (B7-2), which are expressed on antigen-presenting cells, to mediate the co-stimulatory signals necessary for T cell activation. This interaction is critical for the early events of T cell activation and the decision between immunity and anergy.

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SKU: 70553650949

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Dr. DeeJaye
New York, US
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
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Reviewed in the United States on July 17, 2025
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Chloe
Lake Worth, US
★★★★★ 3
Its alright
Color: Black, Size: 5X-Large
True to size per the size chart. The fabric is soft but it it feels cheap to me. It attracts lint but you can brush it off easily so its not the cheapest material I've dealt with. Also, it is opaque (not see through). There is no front/ back indicator either which is indicative of a cheap shirt in my opinion. Would be friendly for tag sensitive people (to stay positive).
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Reviewed in the United States on April 14, 2026
A
Verified Purchase
Amazon Customer
Lexington, US
★★★★★ 5
Fit and colors are perfect
Color: Black, White, Apricot, Size: Large
They fit very well, I got them for my husband and he was very excited for the style & fit i am actually going to buy him another pack
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Reviewed in the United States on October 7, 2025
C
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ChilledOut
Louisville, US
★★★★★ 1
Fuzzballs get wearing once
Color: Black, Size: X-Large
Very smart to wear, but the quality is terrible so after one wash the collar start fraying and fuzzballs start forming. Very disappointing.
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Reviewed in the United States on June 2, 2026
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Amazon Customer
Cuba, US
★★★★★ 5
A nice, comfortable t-shirt with a bit higher moc neck
Size: Small, Color: White
I wear tee shirts a lot, but, because I need something a little warmer at times I wondered if such a thing as a moc-neck tee existed. This shirt is soft and comfortable, not tight but more tee shirt- like in fit.
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Reviewed in the United States on January 7, 2026

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