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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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4.0 ★★★★★
Based on 1914 reviews
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Product Reviews
★★★★★ 4
Short
Size: 8 cube
Little bit shorter than what I thought it would be but it was not hard to put together and I like it
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Nice entry way table
Size: 8 cube, Size: 8 cube
Great-looking 8 cube organizer with a really nice finish. The color is beautiful, and the top has a slightly matte stain that gives it a clean, modern look without being too shiny.
Assembly does take two people at certain points, as you’ll need someone to hold pieces in place while aligning and securing them. Not difficult overall, just easier with an extra set of hands.
It’s a bit shorter than a typical entry table, but the width is great and it offers plenty of storage space. Perfect for organizing baskets, shoes, or everyday items while still looking stylish.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Anyone with multiple monitors should buy this
I have been wanting something like this for years. I use three monitors, and keeping them all aligned is impossible. I've considered using tape, but that seems like it would lead to a sticky mess and it would never hold well. I imagined some solution with magnets, but never came up with anything that I thought I could implement myself.
As soon as I saw this product, I was ordered two sets. I knew that this was either going to be a revolution, or a huge disappointment. It was not a disappointment.
Installation is simple as can be, clean off your monitor back with some alcohol wipes (they should consider including some, would be a nice touch). For my screens, alignment was super easy because they have really square corners so I just stuck my aligners right at the corners and it worked great. For a screen with a curved back or something more geometric you probably want to get the screens in place first, then stick both parts at the same time. Either way, they stuck really well and the pads are flexible so they would work on a curved back just as well as flat.
The brackets also have a locking part that allows you to slide them side to side a bit giving you more flexibility in mounting, and then you can lock them down once everything is lined up so they hold nice and firm. I also managed to screw up and put the wrong part on the wrong side, but luckily if you unlock the bracket you can slide the main part off of the adhesive part completely, so I was able to simply swap the two main parts without needing to peel the adhesive part off. It's a well thought out design and I was impressed by just how much flexibility there was in the mounting solution while still allowing for a very easy installation and rigid final setup.
The magnets are strong, strong enough that if I needed to move a monitor regularly it would actually be annoying because while you can definitely take these apart they hold way too well to be doing so all the time. These are clearly intended for a permanent installation, without making it overly difficult to take things apart if you have to. If you have to turn a screen often though, such as to show something to a client or make the screen visible from another area of the room, I'm not sure if these will be what you need as they don't just come apart easily. If you want your screens to stay where you put them though, they are awesome!
For me, these were perfect, and based on the design I think they should work well for most monitors and most setups. I'm so glad this product exists, it was well worth the money.
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Reviewed in the United States on August 10, 2025
★★★★★ 5
Great product!!!
I feel the price is a little high, but the product is amazing! Works just as described!!! I will be purchasing another set for the bottom of my work monitors. Currently their is just 1 set keeping these level.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
I'd give 10 stars if I could
Holy cow! This is it!
For YEARS I've been looking for a product that would align the bezels on my monitors. I found this product by scrolling through reels and then found the link to Amazon. The price was steep and I was hesitant, but I took the gamble and I'm so glad I did.
Installation is slightly confusing, and you really want to know how this works before you adhere it to any surface. I'll break it down for you:
Align your monitors flat next to each other. Attach one side with the adhesive, then snap the other side on with the magnet. Peel that adhesive strip and lay it on your second monitor so that they are even. Repeat for the bottom. Twist the U shape up for the left, down for the right. Adjust your angle and then lock them by putting the U shape back to how it was. That's it.
The stability on these simple magnets is excellent. I went from a wobbly mount to locked in and only moving when I want it to. I'm so happy this product exists.
That's German engineering for you. 💪💪
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Reviewed in the United States on May 17, 2026
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