SKU: 40101290673

LIF Protein, Bovine

Sale price$259.20 Regular price$288.00
Save 10%

Pay in installments of $72.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

LIF Protein, BovineProduct Specification Species Bovine Synonyms LIF; Leukemia Inhibitory Factor Protein; CDF Protein; DIA Protein; HILDA Protein; MLPLI Protein; D Factor; DIA; differentiation inhibitory activity; differentiation stimulating factor; Differentiation stimulating factor; Emfilermin; LIF; Melanoma derived LPL inhibitor; MLPLI Accession Q27956 Amino Acid Sequence Ser23 Phe202 Expression System E. coli Molecular Weight 19. 8 kDa (Reducing) Purity >95% by SDS

Product Specification


Species Bovine
Synonyms LIF; Leukemia Inhibitory Factor Protein; CDF Protein; DIA Protein; HILDA Protein; MLPLI Protein; D Factor; DIA; differentiation inhibitory activity; differentiation stimulating factor; Differentiation-stimulating factor; Emfilermin; LIF; Melanoma-derived LPL inhibitor; MLPLI
Accession Q27956
Amino Acid Sequence Ser23-Phe202
Expression System E.coli
Molecular Weight

19.8 kDa (Reducing)

Purity >95% by SDS-PAGE and HPLC.
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag No Tag
Physical Appearance Lyophilized Powder
Storage Buffer PBS, 5% trehalose, PH7.4
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

Salas EM, et al. (2011) LIF, a Novel STAT5-Regulated Gene, Is Aberrantly Expressed in Myeloproliferative Neoplasms. Genes Cancer. 2 (5): 593-6.
Chodorowska G, et al. (2004) Leukemia inhibitory factor (LIF) and its biological activity. Ann Univ Mariae Curie Sklodowska Med. 59 (2): 189-93.
Garcia-Campana AM, et al. (2007) LIF detection of peptides and proteins in CE. Electrophoresis. 28 (1-2): 208-32.

Background

LIF (leukemia inhibitory factor) is a pleiotropic glycoprotein belonging to the IL-6 family of cytokines. It is involved in growth promotion and cell differentiation of different types of target cells, influence bone metabolism, cachexia, neural development, embryogenesis, and inflammation. The first exon encoding the signal sequence is alternately spliced, resulting in LIF-D, LIF-M, and LIF‑T mRNAs that produce secreted, extracellular matrix‑associated, and intracellular forms, respectively. LIF has potent proinflammatory properties, being the inducer of the acute phase protein synthesis and affecting cell recruitment into the area of damage or inflammation. LIF is also one of the cytokines that are capable to regulate the differentiation of embryonic stem cells, hematopoietic, and neuronal cells. LIF binds to the specific LIF receptor (LIFR-α) which forms a heterodimer with a specific subunit common to all members of that family of receptors, the GP130 signal-transducing subunit. This leads to the activation of the JAK/STAT and MAPK cascades. Due to its polyfunctional activities, LIF is involved in the pathogenic events and development of many diseases of various origins.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40101290673

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.0 ★★★★★
Based on 23 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
e callie
Fort Morgan, US
★★★★★ 5
Peanut butter delivery system
Color: Blue
My big dog loves this bone. I run PB down the middle on one side when we go out. He loves it and brings the bone to us when we return to play :gimme that bone.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
P
Verified Purchase
Pam’s Product Picks
Belleville, US
★★★★★ 4
Durable bone that you can add a spreadable treat to
Color: Blue
Our German Shepherd was 4 months old when we purchased this. She’s going to be 6 months soon. She has been teething really bad. We wanted some way to sooth her pain. This product was just what we needed. We put it in the freezer with some peanut butter in the center on both sides. Once frozen we give to our puppy. She loves it. When we open the freezer she recognizes the ziplock package that it was delivered in which we store it in our freezer. She jumps around until we give it to her. She loves it and it keeps her occupied for a while. It is very durable. I did not notice any smell when we received it. It does not make any noise. The plastic material is safe for animals. To clean I put in the dishwasher. The only reason I did not give it 5 stars is because sometimes the peanut butter gets stuck in it and may need to go through the dishwasher twice which is not a big deal. Or you can hand wash it. I found the dishwasher was best for us. You do not even have to put anything on it, but our pup likes it. I would recommend to others.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 15, 2025
C
Verified Purchase
Chris
Grantham, US
★★★★★ 5
My dog likes them
Color: brown
Dogs play with these and chew on them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 12, 2026
B
Bump Bump
West Palm Beach, US
★★★★★ 5
Highly recommended for any owner of a "Super Chewer."
Rating: ⭐⭐⭐⭐⭐ (5/5) Title: Finally, toys that can actually withstand my Labrador’s jaws! If you own a "power chewer," you know the struggle: you bring home a new toy, and within ten minutes, it’s shredded into a thousand pieces of foam and plastic. After going through countless toys that promised durability but failed within a day, I decided to give the WOWBALA 2-Pack Indestructible Dog Toys a try—and I am genuinely impressed. The Durability Factor The biggest selling point here is the material. These are made from high-density, food-grade nylon, and you can feel the quality the moment you take them out of the package. They are solid, heavy-duty, and have held up perfectly against my Lab’s relentless chewing. Even after a week of heavy use, there are only minor surface marks where his teeth have made contact, rather than the dangerous chunks that usually break off other toys. Design & Engagement The pack comes with two different shapes—a stick and a ring—which is a great variety. The curved, ergonomic design of the stick makes it very easy for my dog to hold between his paws while he chews, and the textured surface seems to really hit the spot for him. I’ve also noticed that it helps keep his breath fresh and his gums healthy since the texture acts almost like a toothbrush while he plays. The "Milky" Scent One thing I was initially skeptical about was the "milky scent." I wondered if it would be overpowering, but it’s actually quite subtle. It was strong enough to immediately pique my dog’s curiosity right out of the box, but it doesn't leave a weird smell on my carpet or hands. It’s clearly effective, as he keeps coming back to these toys even when he has others scattered around the room. Peace of Mind Beyond just being tough, I appreciate that they are non-toxic and dishwasher safe. After a long day of outdoor play in the mud, being able to just toss these into the dishwasher and have them come out clean and sanitized is a huge convenience. Final Verdict If you have a medium to large breed dog that loves to destroy everything in sight, these toys are well worth the $15.99 investment. It’s rare to find a product that lives up to the "indestructible" label, but these truly do. They’ve been a lifesaver for keeping my dog occupied while I’m working from home, and it’s a relief not having to play "clean up the debris" every evening. Pros: Extremely durable high-density nylon. Great value (2-pack). Easy to clean (dishwasher safe). Engaging design for teething, training, and boredom relief. Safe and non-toxic. Cons: Because they are hard nylon, be careful using them indoors on hardwood floors—they can be a bit noisy when dropped! Highly recommended for any owner of a "Super Chewer."
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
J
Jill R
Carnegie, US
★★★★★ 5
These are way better than I expected and hold up to our aggressive chewer spectacularly!
I got these specifically for our newest pup (an 8 month old lab/pitbull mix--she's a big puppy, lol) who is obsessed with toys and chewing. She has a tendency to go through her toys quick, both chew toys and soft ones, so I wanted something that would last a bit longer for her because I can tell she gets a bit sad when we have to trash one that's hit its lifespan. So far, these have been a big hit! They're the perfect size for her to pick up, the chicken claw-style texture is great for both keeping her interested and giving her some grabbing options, and they do seem to hold up to their claim of being made for aggressive chewers! There's obviously some wear, but it looks like expected chew toy wear; no claws have snapped off, and her chew marks look relatively minimal compared to what she's done to other chews. I also appreciate that these came in a two pack; we have a smaller dog, and while these are technically big for him, he enjoys having one to play with and chew on as well. These have been a pleasant surprise and I actually think I'll come back to buy them again whenever they're spent! Definitely a worthy purchase!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026

recommand products