SKU: 20452435609

Alexa Fluor® 700 Rat Anti-Mouse CD4 Antibody (S-R542)

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Description

Alexa Fluor® 700 Rat Anti-Mouse CD4 Antibody (S-R542)Product Specification Host Rat Antigen CD4 Synonyms T cell surface glycoprotein CD4; T cell differentiation antigen L3T4; T cell surface antigen T4 Leu 3; Cd4 Location Cell membrane Accession P06332 Clone Number S R542 Antibody Type Rat mAb Isotype IgG2b,k Application FCM Reactivity Ms Positive Sample C57BL 6 mouse splenocytes Purification Protein G Concentration 0. 2 mg ml Conjugation Alexa Fluor 700 Physical Appearance Liquid Storage Buffer PBS, 1%

Product Specification


Host Rat
Antigen CD4
Synonyms T-cell surface glycoprotein CD4; T-cell differentiation antigen L3T4; T-cell surface antigen T4/Leu-3; Cd4
Location Cell membrane
Accession P06332
Clone Number S-R542
Antibody Type Rat mAb
Isotype IgG2b,k
Application FCM
Reactivity Ms
Positive Sample C57BL/6 mouse splenocytes
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 1.25μl per million cells in 100μl volume Ms

Background

CD4 is a glycoprotein that functions as a co-receptor for the T-cell receptor (TCR) and is primarily expressed on the surface of helper T cells, monocytes, macrophages, and dendritic cells. It is a member of the immunoglobulin superfamily, consisting of four immunoglobulin domains (D1 to D4) that interact with MHC class II molecules on antigen-presenting cells. This interaction, mediated by the D1 domain of CD4, ensures that T cells recognize antigens presented by MHC II. The cytoplasmic tail of CD4 contains motifs that recruit the tyrosine kinase Lck, which amplifies T cell activation signals. Additionally, CD4 is crucial in the immune response, as it helps activate CD4+ T helper cells, which in turn stimulate other immune cells to combat infections. However, CD4 is also the primary receptor for HIV, allowing the virus to enter host T cells and cause immunodeficiency.

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SKU: 20452435609

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4.2 ★★★★★
Based on 29 reviews
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B
Verified Purchase
BE
Massapequa, US
★★★★★ 4
Nice tactile feel
Style: 2024 Model
Works right out of the box. Installation was simple. Probably should have gotten the next small size, as it is larger than I expected. But I like the key response and the feel of the mouse, so I'm keeping it. Nice, inexpensive keyboard and mouse.
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Reviewed in the United States on December 11, 2025
K
Verified Purchase
K. Gallagher
Alexandria, US
★★★★★ 5
HIGHLY RECOMMEND
Style: 2024 Model
LOVE LOGITECH PRODUCTS. BEEN USING THEIR KEYBOARD AND MOUSE FOR 30 YEARS. A BIT PRICEY BUT WELL WORTH IT. OVER 30 YEARS I HAVE ONLY NEEDED TO REPLACE THE SET 2 TIMES BUT IM A FAST TOUCH TYPER
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Reviewed in the United States on May 31, 2026
K
Verified Purchase
K Williams
Bozeman, US
★★★★★ 1
Well, Logi (Logitech)'s normally great record has been broken...
Style: 2024 Model
Gotta vent. I've had my Logitech K800 forever and a day and LOVED it. Never any performance problems, smooth, comfortable, easy to use, and took a beating daily for years. Got it through work, so it was more expensive than your usual, but it couldn't last forever. It started being unable to take a charge, so I knew I would have to retire it. (They stopped making these (WHY???) and they're selling after-market for a fortune.) I have Logi all things keyboard, mouse, etc., so went with them again. Bought a K650, but out of the gate, it started doing weird stuff, like repeating keys when you weren't even touching the keyboard, jamming up, or just stopping functioning. Did all the usual troubleshooting, but nothing worked. Just to save time, I sent it back here and replaced it with an MK540. Son of a gun if it didn't start immediately doing the same things. NOW I was cranky, so I did my online research and learned these are well known problems for others, who also couldn't solve them. I then went to Logi tech support. Got a level 1 person who walked me through the standard steps I'd already done multiple times (Did you turn it off and on again? :-D), gave me long lists of things to try, then at the end, when nothing worked said, "Well, it's within 30 days so just return it to the seller, and here's a link to our other keyboards." "Ummm," I said, "this is the exact same circumstance with two DIFFERENT keyboards in a row. As I had no trouble with my previous Logi keyboard, and nothing else has changed on my end, it seems logical that the problem is with the new software, hardware or some QA problem with producing these models. Why would I go buy another one when we don't know WHY it's doing this, suggesting I could go through this all over again?" (BTW, a MAJOR inconvenience for days). Her answer (twice): "Don't worry, it'll be fine, just go get another one." OMG. Stubborn, so I gave it a third shot (MX Mechanical) now for 3x the money hoping better quality would help, but guess what? I've now received my 3rd notice from Amazon saying delivery will be delayed, this time with no date estimate known. I tried, Logi, but even I am done. Buying a highly rated other keyboard that has all the features I need. Logi, not sure what you're doing with these membrane ones (vs. mechanical), but it's not working. If you could ship me a K800, I'd so appreciate it. :-D K
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Reviewed in the United States on October 18, 2024
J
Verified Purchase
John R
Massapequa, US
★★★★★ 5
Perfect keyboard with wireless Unifying Receiver
Style: 2024 Model
I've tried and had to return multiple $100+ keyboards due to irregular F1-F12 or arrow key layouts, dreaded Fn key in the lower-left, mushy key travel feel, etc. I've been using exclusively Logitech keyboards & mice since the 90's, but gave up and tried venturing to other brands like Keychron (had issue with inadvertent key presses when pausing fingers over keys). But this simple keyboard just gets it right. I didn't even need the bundled mouse since I use Logitech MX Master 2S, but like that I can use the same Logi Unifying Receiver and Options+ software (optional). There are dedicated keys: * power on/off colored slider * play/rewind/ff * volume mute/down/up * calculator * battery level * 2 user-configurable buttons * Fn+ F1-F8 are also configurable The are 3 height levels, built-in mini palm rest (I still use a big keyboard mat beneath), slot for Unifying Receiver and 2 AA under the battery cover. Minor issue is the batteries clack when using the F5-F12 keys (just below where the batteries are), but I taped a little strip of foam on the inner side of the battery cover to resolve it. Also great is Logitech MK270, which is more compact, light, and perfect for the road. Both have amazing battery life.
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Reviewed in the United States on September 10, 2025
M
Verified Purchase
Matthew T
Lexington, US
★★★★★ 5
solid keyboard and mouse, quiet keys
Style: 2024 Model
solid keyboard and mouse, quiet keys
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Reviewed in the United States on June 10, 2026

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