SKU: 70194030482

Alexa Fluor® 700 Mouse Anti-Human CD21 Antibody (S-764-18)

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Description

Alexa Fluor® 700 Mouse Anti-Human CD21 Antibody (S-764-18)Product Specification Host Mouse Antigen CD21 Synonyms Complement receptor type 2; Complement C3d receptor; Epstein Barr virus receptor (EBV receptor); C3DR; CR2 Immunogen Recombinant Protein Location Cell membrane Accession P20023 Clone Number S 764 18 Antibody Type Mouse mAb Isotype IgG1,k Application FCM Reactivity Hu Positive Sample Human PBMC Purification Protein G Concentration 0. 2 mg ml Conjugation Alexa Fluor 700 Physical Appearance Liquid

Product Specification


Host Mouse
Antigen CD21
Synonyms Complement receptor type 2; Complement C3d receptor; Epstein-Barr virus receptor (EBV receptor); C3DR; CR2
Immunogen Recombinant Protein
Location Cell membrane
Accession P20023
Clone Number S-764-18
Antibody Type Mouse mAb
Isotype IgG1,k
Application FCM
Reactivity Hu
Positive Sample Human PBMC
Purification Protein G
Concentration 0.2 mg/ml
Conjugation Alexa Fluor® 700
Physical Appearance Liquid
Storage Buffer

PBS, 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

CD21, also known as complement receptor type 2 (CR2), is a ~145 kDa membrane glycoprotein expressed mainly on mature B cells and follicular dendritic cells that functions as the principal cellular receptor for complement fragments such as C3d and for the Epstein–Barr virus gp350/220 glycoprotein, thereby bridging innate and adaptive immunity by forming the CD19/CD21/CD81 coreceptor complex that lowers the B-cell receptor signaling threshold, promotes B-cell activation, proliferation, antibody production and antigen presentation, and also participates in retaining immune complexes in germinal centers, while its soluble ectodomain (sCD21) released by metalloprotease shedding circulates as an immunomodulatory decoy that can either enhance or suppress immune responses depending on context and is dysregulated in various infectious, neoplastic and autoimmune disorders.

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SKU: 70194030482

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MBR15
Louisville, US
★★★★★ 5
A Timeless Classic That Never Gets Old
Format: Audiobook
The Very Hungry Caterpillar is such a sweet, beautifully illustrated book. The simple story, bright colors, and fun cut-out pages keep little ones completely engaged. It’s perfect for teaching counting, days of the week, and healthy eating in a way that feels playful and memorable. My kids ask for it over and over, and it’s one of those books that adults enjoy reading too. A true classic that every child’s bookshelf should have!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2025
L
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Lisa Carol
Bozeman, US
★★★★★ 5
One of the best books for babies.
Format: Board book
Great book for a one-year-old! Such a colorful, bright, book about a caterpillar that eats all sorts of things before turning into a butterfly. Terrific book for counting also.
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Reviewed in the United States on May 24, 2026
M
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Mrs. Jones
Boise, US
★★★★★ 5
One of Eric Carl’s best!
Format: Hardcover
Great book - a classic.
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Reviewed in the United States on May 6, 2026
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Victoria D.
Belleville, US
★★★★★ 5
Cute and fun reading
Format: Board book, Format: Board book
Love this book! My toddler loves it too! Perfect for spring reading!
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Reviewed in the United States on May 19, 2026
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Julia
Massapequa, US
★★★★★ 5
Cute and educational
Format: Board book
Besides being such a cute story, the tactile features in this book hold my one year old's attention span: the different size pages and hole cut-outs. Also good for introducing days of the week, numbers, and fruits.
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Reviewed in the United States on March 25, 2026

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