IL-28A/IFN-λ2 Protein, Mouse
SKU: 1529440896

IL-28A/IFN-λ2 Protein, Mouse

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Description

IL-28A/IFN-λ2 Protein, MouseProduct Specification Species Mouse Synonyms Interferon lambda 2; IFN lambda 2; Interleukin 28A; IL 28A; Accession Q4VK74 Amino Acid Sequence Asp20 Val193 Expression System E. coli Molecular Weight 20 kDa (Reducing) Purity >95% by SDS PAGE and HPLC. Endotoxin <0. 1EU g Conjugation Unconjugated Tag No Tag Physical Appearance Lyophilized Powder Storage Buffer 20mM Tris, 150mM NaCl, pH8. 0 Reconstitution Reconstitute at 0. 1 1 mg ml according to the size

Product Specification


Species Mouse
Synonyms Interferon lambda-2; IFN-lambda-2; Interleukin-28A; IL-28A;
Accession Q4VK74
Amino Acid Sequence

Asp20-Val193

Expression System E.coli
Molecular Weight

20 kDa (Reducing)

Purity >95% by SDS-PAGE and HPLC.
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag No Tag
Physical Appearance Lyophilized Powder
Storage Buffer 20mM Tris, 150mM NaCl, pH8.0
Reconstitution

Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.

Stability & Storage · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.
· 3 months, -20 to -80℃ under sterile conditions after reconstitution.
· 1 week, 2 to 8℃ under sterile conditions after reconstitution.
· Please avoid repeated freeze-thaw cycles.
Reference

Nat Immunol. 2003 Jan;4(1):63-8.

Background

Interferon lambda 2 (IFN-λ2), also known as IL-28A, is a member of the type III interferon family, which also includes IFN-λ1 and IFN-λ3. IFN-λ2 plays a crucial role in the innate immune response to viral infections and has been shown to exhibit antiviral activity against a variety of viruses, including hepatitis C virus, influenza virus, and others. It signals through the IFN-λ receptor complex, leading to the activation of JAK-STAT signaling pathways and the induction of interferon-stimulated genes (ISGs) that contribute to the antiviral defense mechanisms. IFN-λ2 is primarily produced by immune cells, such as dendritic cells and macrophages, in response to viral stimuli and functions as a key mediator of the host's defense against viral pathogens.

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SKU: 1529440896

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Nicole Lomonaco
Port Orchard, US
★★★★★ 4
Dog ball
Color: A) Small 2.5" Ball
My dog enjoys but smaller than expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
A
Verified Purchase
Amy
Carnegie, US
★★★★★ 5
Great tough ball
Color: A) Small 2.5" Ball
Great ball for dogs who like to destroy most any ball. Our girl loves this. Yay!!!
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Reviewed in the United States on March 17, 2026
C
Verified Purchase
Christopher D Smith
West Palm Beach, US
★★★★★ 3
Not Quite So Durable...
Color: B) Medium 3" Ball, Color: B) Medium 3" Ball
Maybe I have a SUPER aggressive chewer...he went through this ball in under a week. I originally bought the ball because of a review that stated the owner's Pitbull had the same ball for two years; not so much for my Rottweiler. He started chewing off and swallowing small crumbs from the ball within a day or two. By the end of the week, it was chunks so I had to toss it in the trash to prevent an intestinal obstruction. On the up side, my Rottweiler LOVED the ball while it lasted. However, I can't, in good conscience, give this ball a rave review based on this experience. Please take this review with a grain of salt as I have yet to find ANY toy that my boy won't DESTROY in a week or two. I hope that someone finds this informative when searching for chew toys for SUPER aggressive chewers like mine.
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Reviewed in the United States on March 16, 2026
S
Verified Purchase
Sarah Mason
Los Angeles, US
★★★★★ 5
If you were looking for a sign to buy this, here it is
Color: A) Small 2.5" Ball
If you are looking for a ball that can stand up next to a heavy, aggressive chewer.. this is a good choice. Our Pitbull literally destroyed any and every toy that she gets with the exception of one kind of kong ball. She tore through the kong Frisbees, any kind of squeaker toy, and the wobble wag giggle ball (she usually always ends up destroying these but it takes a few weeks. Today she beat her record and had her brand new ball destroyed within the first 30 minutes of us taking it out of the box). But, this ball she has not been able to destroy. I'd like to believe that the Kong ball she has and this ball are made of the same material. Because they are the only balls she can't ruin. And it's not because of a lack of trying. We have watched her sit there and chew with a side of her mouth for an hour or more, trying to make some kind of indention or tear in it and it just never happened. She loves to chew this thing, chase this thing, sleep with this thing. I most certainly recommend this ball. If it is I'ah proof then it is most certainly, 100% a durable ball and worth every penny
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Reviewed in the United States on May 7, 2026
M
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Michael Campbell
New York, US
★★★★★ 5
Chew King Supreme Chew Toy
Color: B) Medium 3" Ball
So far, freaking amazing. This ball is awesome. I have a 90 lb American Bulldog. Like other reviews. Lot of " indestructible balls" lasted minimum time. Not this one. She even took it to bed with her I bought the 3 inch ball, not the 4 inch ball. The 3 inch ball works amazingly for a large Dog. Yes the 4 inch would be better. So in my opinion, either ball would be fine. As others also said. This ball keeps a active Dog busy for hours. Love to play catch. Love frozen peanut butter in it. One last thing. The price is amazing. I don't see needing to buy another, unless it is lost, because this is made to last. We couldn't be happier.
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Reviewed in the United States on March 10, 2026

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