SKU: 90527517248

Alexa Fluor® 647 Mouse Anti-Rat CD45RA Antibody (S-R629)

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Description

Alexa Fluor® 647 Mouse Anti-Rat CD45RA Antibody (S-R629)Product Specification Host Mouse Antigen CD45RA Synonyms Leukocyte common antigen; high molecular weight form Location Cell membrane Accession 24699 Clone Number S R629 Antibody Type Mouse mAb Isotype IgG1,k Application FCM Reactivity Rt Positive Sample SD Rat splenocytes Purification Protein G Concentration 0. 2 mg ml Conjugation Alexa Fluor 647 Physical Appearance Liquid Storage Buffer PBS, 1% BSA, 0. 3% Proclin 300 Stability & Storage 12 months

Product Specification


Host Mouse
Antigen CD45RA
Synonyms Leukocyte common antigen; high molecular weight form
Location Cell membrane
Accession 24699
Clone Number S-R629
Antibody Type Mouse mAb
Isotype IgG1,k
Application FCM
Reactivity Rt
Positive Sample SD Rat splenocytes
Purification Protein G
Concentration 0.2 mg/ml
Conjugation Alexa Fluor® 647
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 Rt

Background

CD45RA protein is a specific isoform of the CD45 receptor, also known as protein tyrosine phosphatase receptor type C (PTPRC), which is generated through alternative splicing of the CD45 gene. It is a marker for naive T cells and central memory T cells (TCM), characterized by the presence of exon 4 (A) but the absence of exons 5 (B) and 6 (C) in its mRNA. CD45RA is expressed on the surface of nucleated hematopoietic cells, including B cells, NK cells, naive/resting T cells, medullary thymocytes, and plasmacytoid dendritic cells. It plays a crucial role in the immune system by modulating T cell receptor (TCR) and B cell receptor (BCR) signaling pathways, facilitating the activation and proliferation of immune cells. In adults, CD45RA+ cells may help prevent autoimmune diseases, while reduced numbers of CD45RA+ CD4+ T cells have been associated with conditions such as biliary atresia, primary biliary cirrhosis, fetal distress, and preeclampsia. Pathologists use CD45RA to differentiate naive T cells (CD45RA+) from memory T cells (CD45RO+), although this distinction may not be applicable in adult allogeneic hematopoietic cell transplant recipients.

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SKU: 90527517248

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4.1 ★★★★★
Based on 23 reviews
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Product Reviews
C
Verified Purchase
Clever Naming Scheme
Whiting, US
★★★★★ 5
Durable
Size: Small, Style: Ultra Duo Tug
Well, our dogs didn't end up playing tug with each other, but they love the toy anyway and it still looks pretty good after a month. That doesn't sound like much, but they both love to chew and destroy rubber and they're ridiculously good at it. They also really like chewing the strap between the two balls, which is still in surprisingly good condition. Most "indestructible" toys are toast within the hour. Well worth the money. Plus, the unpredictable bounce when thrown keeps the dogs busy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
L
Verified Purchase
LJ
Draper, US
★★★★★ 4
Good quality ball for large dog, easy to clean
Size: Large, Style: Ultra Tug
It’s challenging to review this because I bought it for my son’s dog, and it doesn’t interest him at all, even though he likes and plays with regular balls. The ball appears to be good quality, which is typical for this brand. He likes to play tug of war, so I thought the combination with a ball would be a hit. The strap looks durable, so time will tell if he develops an interest in playing with this at some point. The ball is hard rubber and fairly heavy, so it should hold up to an aggressive chewer. It doesn’t squeak or make any other noise. It bounces unpredictably and erratically because of the attached strap. Both the strap and ball are easy to clean with soap and water.
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Reviewed in the United States on December 30, 2025
B
Verified Purchase
Beth M
Louisville, US
★★★★★ 5
A must have if "ball is life"
Size: Large, Style: Ultra Tug, Size: Large, Style: Ultra Tug
If ball is life for your pup this is a great option! Our 70lb mutt is obsessed. We got her the large size for reference. She is not a chewer so we have zero issues with the attached leash/rope part. The ball is the same hard rubber of a typical Chuck-it ball. The rope makes tossing and grabbing the ball from your dog so much easier and cleaner. I also love this helps avoid any choking hazard with typical balls having the rope.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
T
Verified Purchase
Tammy
Fort Morgan, US
★★★★★ 5
Best and most durable toy for our German shepherd
Size: Medium, Style: Ultra Tug, Size: Medium, Style: Ultra Tug
We have a German shepherd. This is our 2nd purchase. The first one was her first and favorite toy. We still have the first one. But the strap broke (after a year) bc we didn't realize she hid it under blanket, and she chewed it in half. But after a year of hard play, the strap was worn out. She still plays with her ball, and often carries it with her on her walks. It throws well and I love not having to pick up a slobbery ball. The ball is soft, durable, safe, and easy to play with.
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Reviewed in the United States on August 22, 2025
C
Verified Purchase
Cindy Hutchinson
Grantham, US
★★★★★ 5
Need suggestions
Size: Large, Style: Ultra Tug
This was a great toy but my 9 month old puppy (65 lbs ). Chewed it up within 3 hours. Any suggestions? I am really trying to find a tugging toy that can with stand him. He is a significant chewer.
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Reviewed in the United States on May 8, 2026

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