SKU: 57523837284

FITC Rat Anti-Mouse FR4 Antibody (S-R705)

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Description

FITC Rat Anti-Mouse FR4 Antibody (S-R705)Product Specification Host Rat Antigen FR4 Synonyms Sperm egg fusion protein Juno; Folate receptor 4; Folate receptor delta (FR delta); Folate binding protein 3; IZUMO1 receptor protein JUNO; Izumo1r; Folbp3; Folr4; Juno Location Cell membrane Accession Q9EQF4 Clone Number S R705 Antibody Type Rat mAb Isotype IgG1,k Application FCM Reactivity Ms Purification Protein G Conjugation FITC Physical Appearance Liquid Storage Buffer PBS, 25% Glycerol, 1%

Product Specification


Host Rat
Antigen FR4
Synonyms Sperm-egg fusion protein Juno; Folate receptor 4; Folate receptor delta (FR-delta); Folate-binding protein 3; IZUMO1 receptor protein JUNO; Izumo1r; Folbp3; Folr4; Juno
Location Cell membrane
Accession Q9EQF4
Clone Number S-R705
Antibody Type Rat mAb
Isotype IgG1,k
Application FCM
Reactivity Ms
Purification Protein G
Conjugation FITC
Physical Appearance Liquid
Storage Buffer

PBS, 25% Glycerol, 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 5 μl per million cells in 100μl volume

Background

Folate receptor 4 (FR4), also known as folate receptor delta or IZUMO1R, is a protein encoded by the FOLR4 gene in humans. It is a subtype of the receptor for the vitamin folic acid and is primarily expressed on CD4 T lymphocytes, with lower expression on CD8 T cells. FR4 is highly expressed in regulatory T cells (Tregs) and is also found in tumor-associated macrophages (TAMs) and T follicular helper cells (TFH cells). This protein plays a role in immune regulation, as its high expression can distinguish Tregs from other T cells. Additionally, FR4 is involved in the high-affinity binding and transport of folate and folate analogs across the cell membrane.

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SKU: 57523837284

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4.2 ★★★★★
Based on 8 reviews
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Kit
Phoenix, US
★★★★★ 1
Ouch!! Update: Mold inside?
Update: I reduced my three star review to one star due to finding black specs all over lid inside my second jar with some black specks on the top pads. Mold? Mildew? I don't know have mold in my cabinets and I keep this in my top vanity drawer which is on its own wall nowhere near the tub or shower. I was so disgusted I threw out the whole jar plus my third one. I hate to write a bad review on a product that is such a good value and so needed in this market. Maybe it's just a one-off but either way I will not be repurchasing due to the soapy, stinging pads - mold or no mold. My conscience is telling me to warn people. Original review: They sting like there is micellar water in them? Plus soap. They are very sudsy and make you feel like you have to rinse your eyes before they dry out, which defeats the purpose. They do work well to get mascara off but so does soap. Sadly will not replace the old Almay oil-free remover pads which I have used for years. Have not found a good replacement for my dry, sensitive eyes. I will have to use them on other parts of my face but not my eyes.
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Reviewed in the United States on January 10, 2024
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Verified Purchase
Betty Boop
Houston, US
★★★★★ 4
My last batch has changed - be aware!
I have used these pads for several years now. They are generally very good and do the trick. I don't even look at other products because they are so good. However, in this last order, they no longer have a smooth side and a bumpy side. They always had the different texture which helped in using them. I agree they are a little small which I have gotten used to, but now with both sides being smooth, they are much harder to use to wipe. Plus you don't have the advantage of the texture. This is a dowgrade for sure.
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Reviewed in the United States on October 22, 2025
S
Verified Purchase
Sandra
Fort Morgan, US
★★★★★ 5
Oil and fragrance free for sensitive skin
Oil free which is good for contact lens wearers. Relatively thick textured material so I can use just one pad for both eyes. Ok for sensitive skin with no fragrance. I've used these for years and the quality has remained consistent despite the reasonable price.
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Reviewed in the United States on March 24, 2026
S
Verified Purchase
Sassy Gal Pal
Battle Creek, US
★★★★★ 2
A 5-star product is now barely 2-stars. Shame!
I have used these makeup remover pads for years as I wear contacts and have sensitive skin around my eyes. However, the last 3-pack I ordered (Feb 2026), the pad is noticeably sub-par. They are much thinner, there is no quilted texture on one side, and they roll up immediately when you start to rub your eyes with them. In addition, I have to use 4-5 pads to get everything off vs. previously I could easily just use one on each eye. Obviously I will go through them much faster and every time I use them, I get frustrated by how bad the quality is now. Another product victim to shrinkflation and using cheaper materials, but charging the same amount or more than before. Do they do the job removing the makeup - yes. Do they do so without burning my eyes or leaving an oily residue - yes. But knowing how great they used to be, I can only give the current product 2 stars.
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Reviewed in the United States on April 6, 2026
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Alexandra (Sandra G)
Pawtucket, US
★★★★★ 5
Excellent product!
I have used this product for years but since retired much less. However when I actually needed it again I couldn't find it anywhere and when I did buying just one was pretty expensive. So I decided to wait until the price dropped...but it never happened. I never even thought of trying Amazon but I did and got an amazing deal of a 3 pack at a very reasonable price. The oil is rich, soothing and so emollient and cleans my brows and eye lashes perfectly! I keep one in my fridge which is especially soothing during warm summer days and helps to reduce under eye puffiness. Accolades to Amazon...you never let me down!
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Reviewed in the United States on January 1, 2024

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