SKU: 69610704767

LIF Protein, Rat

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Description

LIF Protein, RatProduct Specification Species Rat Synonyms Leukemia inhibitory factor; Differentiation stimulating factor; lif; D factor Accession P17777 Amino Acid Sequence Ser23 Phe202 Expression System E. coli Molecular Weight 18kDa (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, 200mM NaCl, 1m DTT, pH8. 0 Reconstitution Reconstitute at 0. 1 1 mg ml

Product Specification


Species Rat
Synonyms Leukemia inhibitory factor; Differentiation-stimulating factor; lif; D factor
Accession P17777
Amino Acid Sequence Ser23-Phe202
Expression System E.coli
Molecular Weight 18kDa (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, 200mM NaCl, 1m DTT, 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

1. Ryffel B. et al. (1993) International Review of Experimental Pathology. 34: 69-72.

Background

The leukemia inhibitory factor (LIF) belongs to the interleukin-6 (IL-6) cytokine family, which is involved in various biological processes including inflammation, immune responses, and embryonic development. Leukemia inhibitory factor is a glycoprotein growth and differentiation factor with pleiotropic activity. LIF has potent effects on the hematopoietic system, including megakaryocyte progenitor cells. In addition, LIF has bone regeneration activity, induces cachexia and acute-phase response in hepatocytes, and inhibits adipogenesis, to mention the more important activities. In vivo LIF treatment in monkeys and rodents was followed by signs of general toxicity, cachexia, acute-phase reaction, and stimulation of hematopoiesis. The safety margin for possible therapeutic effects on hematopoiesis seems to be very narrow.

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SKU: 69610704767

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4.7 ★★★★★
Based on 12 reviews
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nails44
San Leandro, US
★★★★★ 5
It looks like a Totoro
Color: Hare - Large
Great toy ! Pibble loves it! an it looks just like a Totoro which is huge plus at our house. These are very durable and once de gloved the body will last a very long time if your dog isn’t a big chewer.
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Reviewed in the United States on December 29, 2025
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Verified Purchase
Chelsea
Birmingham, US
★★★★★ 5
Very fun toy at a great price
Color: Monsieur Acorn - Large
My dog (an American Staffordshire Terrier) lovessss to chew and destroy things! We have literally gotten three of these because she loves them so much, and they last, too!! You get the first toy, which my dog rips open. I’m not sure exactly how long it takes for her to destroy it, maybe a few days to a week. Then another little toy (with a sad face lol) is revealed. She highly enjoys this one, as well! Finally, she rips the fabric off that and then a blue, spiky ball is revealed. She lovesss to chew on it and I think the bumps are a nice texture for her mouth. She is quite a strong chewer and the ball lasts a long time!! No toy lasts forever and I have found under dog toys are quite expensive and that’s no guarantee of how long it will actually last. But I am perfectly fine with spending ~$11 every once in a while for these toys because I know she loves them, and they are not immediately destroyed.
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Reviewed in the United States on July 25, 2020
M
Verified Purchase
malysway
Bozeman, US
★★★★★ 5
Would happily purchase again.
Color: Hedgehog
My powerchewer of a dog destroys plushies in 10 minutes and most other 'tough chew' toys don't last more than a day or two - at most. But he loves his hedgehog and hasn't managed to destroy it! Sure, it has a plethora of teeth marks, but it's in one piece and he hasn't managed to bite off any chunks (I was worried about the hedgies nose 😂). It stands up to his teeth and allows him to satisfy his need to gnaw & chew, safely.
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Reviewed in the United States on March 23, 2026
L
Verified Purchase
lorraine williams
Battle Creek, US
★★★★★ 5
Best toy around
Color: Hare - Large
If you have the type of dog that can chew anything up but a bowling ball this is the toy for you my dog has been chewing on it and can't even tear it she loves it she won't let go of it and we're working on 45 minutes this toy is great and I'm going to buy other ones thank you
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Reviewed in the United States on June 12, 2026
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Verified Purchase
Pocadot
Louisville, US
★★★★★ 5
Best toys!
Color: Monsieur Acorn - Large
BEST TOYS!!! My dogs LOVE THESE!!! The bonus toy inside is SOOO FUN!! Last ms them a long time.
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Reviewed in the United States on April 25, 2026

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