SKU: 87549992720

Alexa Fluor® 488 Rat Anti-Mouse/Human CD45R/B220 Antibody (S-R519)

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Description

Alexa Fluor® 488 Rat Anti-Mouse/Human CD45R/B220 Antibody (S-R519)Product Specification Host Rat Antigen CD45R B220 Synonyms Receptor type tyrosine protein phosphatase C; Leukocyte common antigen (L CA); Lymphocyte antigen 5 (Ly 5); T200; CD45; Ly 5; Ptprc Location Cell membrane, Synapse Accession P06800 Clone Number S R519 Antibody Type Rat mAb Isotype IgG2a,k Application FCM Reactivity Hu, Ms Positive Sample BALB c mouse splenocytes Purification Protein G Concentration 0. 2 mg ml Conjugation Alexa Fluor 488

Product Specification


Host Rat
Antigen CD45R/B220
Synonyms Receptor-type tyrosine-protein phosphatase C; Leukocyte common antigen (L-CA); Lymphocyte antigen 5 (Ly-5); T200; CD45; Ly-5; Ptprc
Location Cell membrane, Synapse
Accession P06800
Clone Number S-R519
Antibody Type Rat mAb
Isotype IgG2a,k
Application FCM
Reactivity Hu, Ms
Positive Sample BALB/c mouse splenocytes
Purification Protein G
Concentration 0.2 mg/ml
Conjugation Alexa Fluor® 488
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 Ms

Background

CD45R/B220 is an isoform of the CD45 protein, a member of the protein tyrosine phosphatase (PTP) family, and serves as a critical regulator of T- and B-cell antigen receptor signaling. It is predominantly expressed on the surface of B cells, from early pro-B cells to mature and activated B cells, making it a commonly used pan-B cell marker in mice. Additionally, CD45R/B220 is also found on certain subsets of activated T cells, lymphokine-activated killer cells (LAK), NK cell progenitors, and T cells in mutant mice. This molecule plays a crucial role in lymphocyte development and antigen signaling, and its expression is regulated during different stages of B cell maturation.

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SKU: 87549992720

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4.5 ★★★★★
Based on 26 reviews
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E
Verified Purchase
E. Frazee
Alexandria, US
★★★★★ 5
Great toy loved by 3 big dogs
Pattern Name: Skunk
We have a black lab and 2 grandpups (a Great Dane and a Cane Corso) that visit regularly. All 3 love this toy. All 3 destroy toys pretty quickly, sometimes within minutes. I have no idea what it is about this one, but they have not even remotely destroyed it except for major slobber damage from being so loved. I bought the first one months ago from TJ Maxx and then bought another on here thinking it could be a replacement when the first one got destroyed. The first one has yet to be destroyed. It sounds like there is a water bottle inside of it but it is some kind of coil thing. That being said, this toy can be very annoying to listen to, but we tolerate it for 3 very happy dogs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2017
L
Verified Purchase
LDS
Bozeman, US
★★★★★ 4
Not for us, unfortunately.
Pattern Name: Chipmunk
Cute idea. We have doxies. Unfortunately, they ripped the apart in 5 minutes to get to the squeaker. I'm sure other breeds are more gentle with their toys. It would be a great toy for them.
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Reviewed in the United States on January 2, 2026
M
Verified Purchase
Mary
Waukegan, US
★★★★★ 5
Very durable
Pattern Name: Chipmunk
Our dog loves this "squeaky." He got it as a gift 11 months ago and I finally had to replace it because he almost had the head and tail chewed off -- took him about a year of chewing. I almost hated to throw the old one away because the squeakers still worked! Our dog is small -- about 22 lbs. -- but is a terrier mix and loves playing tug-of-war with this Zippy toy and he also loves shaking it like crazy. It's a great value compared to the toys I find in the local pet stores. Most of those "die" because he punctures them with his teeth so they no longer squeak. This one is well worth the price.
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Reviewed in the United States on September 28, 2019
M
Verified Purchase
Momma K
Boise, US
★★★★★ 5
My big dogs FAVE!
Pattern Name: Chipmunk, Pattern Name: Chipmunk
These are the absolute best! We bought one in store over the holidays because they don’t have the stuffing that dogs like to pull out. My big dog thinks it’s his baby, but it’s light enough for my small dogs. As it got tattered from being carried, fetched, and bathed… we needed a replacement. He doesn’t do anything without his baby. He immediately took to this as it wasn’t brand new. Success with the replacement. I will definitely be buying again, because nobody one wants a sad pup.
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Reviewed in the United States on July 7, 2025
B
Verified Purchase
Barb the Reviewer
Dallas, US
★★★★★ 5
Durable dog toy
These tall tails natural dog leather toys are great for my dogs. And even the stronger dogs who come to visit can't destroy them as fast as the other toys. The pups all have their favorite whether it is the log, the fox, or the bone.
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Reviewed in the United States on November 1, 2025

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