SKU: 83610617468

FITC Mouse Anti-Human CD19 Antibody (S-3522)

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Description

FITC Mouse Anti-Human CD19 Antibody (S-3522)Product Specification Host Mouse Antigen CD19 Synonyms B lymphocyte antigen CD19; B lymphocyte surface antigen B4; Differentiation antigen CD19; T cell surface antigen Leu 12 Location Cell membrane Accession P15391 Clone Number S 3522 Antibody Type Mouse mAb Isotype IgG1,k Application FCM Reactivity Hu Positive Sample Human peripheral blood Leukocytes Purification Protein G Concentration 0. 2 mg ml Conjugation FITC Physical Appearance Liquid Storage

Product Specification


Host Mouse
Antigen CD19
Synonyms B-lymphocyte antigen CD19; B-lymphocyte surface antigen B4; Differentiation antigen CD19; T-cell surface antigen Leu-12
Location Cell membrane
Accession P15391
Clone Number S-3522
Antibody Type Mouse mAb
Isotype IgG1,k
Application FCM
Reactivity Hu
Positive Sample Human peripheral blood Leukocytes
Purification Protein G
Concentration 0.2 mg/ml
Conjugation FITC
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

CD19, also known as B-lymphocyte antigen CD19 or B-Lymphocyte Surface Antigen B4, is a 95 kDa type I transmembrane glycoprotein that belongs to the immunoglobulin superfamily and is encoded by the CD19 gene. It is primarily expressed on all B lineage cells, from early pro-B cells to plasma cells, and plays a crucial role in B cell development, activation, and signaling. As a co-receptor, CD19 enhances signaling through the B cell receptor (BCR) complex, lowering the threshold for B cell activation and promoting B cell proliferation and differentiation. It forms a complex with CD21, CD81, and other proteins, which helps in the recognition of antigens tagged with complement and amplifies BCR signaling. CD19 is also a biomarker for B cell-related diseases and a target for immunotherapies, including monoclonal antibodies and CAR-T cell therapies, due to its consistent expression on B cells and B cell malignancies.

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SKU: 83610617468

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4.7 ★★★★★
Based on 15 reviews
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Verified Purchase
Noah Swift
Pawtucket, US
★★★★★ 5
Dog loves them
Size: 1 Count (Pack of 1), Style: Heart
The dog loves these, they last about a month so not bad for the price, he loves to chew on them
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Reviewed in the United States on February 10, 2026
L
Verified Purchase
Leanne Elizabeth
San Leandro, US
★★★★★ 4
Squeaker Beware
Size: 1 Count (Pack of 1), Style: Heart
Bought these for gifts. One dog was squeaking it constantly (beware your ears lol) and within about 15mins it no longer squeaked. It was a Bernedoodle so wasn’t destroying it, just happily making it squeak. It still works as a bouncy ball. But the squeaker definitely doesn’t last long depending on how much it’s used. Overall a cute concept providing plenty of entertainment. Definitely not a toy if you have an aggressive chewer unless monitoring play.
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Reviewed in the United States on February 16, 2025
L
Verified Purchase
Ladidulce
Massapequa, US
★★★★★ 5
DOGS LOVE
Size: 1 Count (Pack of 1), Style: Heart
My dogs love it! I buy as gifts too as it’s always appreciated. Easy squeak and fun to bounce with all the sides. My dogs chew until they crack & still squeak for a bit. When eventually squeak stops my dogs still return to it. They seem to love just for the air sounds. I personally appreciates that more than the squeak but what do I know? I’m not a dog.6
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Reviewed in the United States on July 9, 2025
C
Verified Purchase
C. Wisner
Draper, US
★★★★★ 1
Great, but they don't last.
Size: 1 Count (Pack of 1), Style: Heart
Our dog absolutely loves these things. However, they get punctured or form a crack on a seam with very little use. This time it only took a couple of hours of play. Once this happens, they no longer squeak. This may sound weird, but the heart shape seems worse for this defect.
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Reviewed in the United States on August 31, 2025
K
Verified Purchase
KEISHAD
Fort Morgan, US
★★★★★ 5
My dog loves it - yours will, too
My little merle bulldog absolutely LOVES this toy! It is so cute to watch him play, chew, and toss it all around. We were worried he would chew through the material but so far that is not the case. This product is sturdy and can take a beating!
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Reviewed in the United States on May 10, 2026

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