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NEW Products


Catalog #

Product Name

C8000 Conjugate Stabilizing Buffer
E3000-01D Endothelial Basal Medium MCDB 131 w/ D-Valine, low Phenol Red (Powder)
H6008-73A HIV-1 vif, with Glycerol (Human Immunodeficiency Virus-1)
L1017-03 L+Lactic Acid, Calcium Salt, Hydrate
S5329-20 SLC1A5 (Solute carrier family 1 member 5, Neutral Amino Acid Transporter B(0), ASCT2, Sodium-dependent neutral amino acid transporter type 2)
S7972-51D Stathmin 1 (Oncoprotein 18, STMN1)
T8665-21M Troponin I and Troponin C, Cardiac, Human




CLOCK, a basic helix-loop-helix (bHLH)/PAS protein, is an important factor in the molecular clock mechanism. Mutations in this protein lead to abnormal circadian behavior and defective transcriptional activity. CLOCK has been shown to interact strongly with other bHLH-PAS proteins such as MOP3, a BMAL1 isoform.

Monarch Butterlfy

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FEATURED Custom Polyclonal Antibodies

white rabbit

United States Biological is known for more than the thousands of antibodies offered in our catalog. Our antibodies are produced in state of the art facilities in the US.

We maintain current USDA certification as a qualified animal research facility, and comply with the Animal Welfare Act. We follow guidelines set forth by the National Institute of Health (NIH) and have established an Institutional Animal Care and Use Committee (IACUC) to review all production protocols prior, during and after all client programs.


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ARTICLE Hyaluronan


Hyaluronan (also called hyaluronic acid or hyaluronate) is an anionic, nonsulfated, glycosaminoglycan distributed widely throughout connective, epithelial and neural tissues. It is unique among glycosaminoglycans in that it is nonsulfated, forms in the plasma membrane instead of the Golgi, and can be very large, with its molecular weight often reaching the millions. One of the chief components of the extracellular matrix, hyaluronan contributes significantly to cell proliferation and migration, and may also be involved in the progression of some malignant tumors.

Catalog #

Product Name




H7980-11K Hyaluronic Acid Pab Sh x Hu
H7981-02 Hyaluronidase 3 Pab Rb x Mo
H7981-03 Hyaluronidase 1 Pab Gt x Hu
H7981-05B Hyaluronidase (HYAL) Pab Rb x Sh
H7980-11B Hyaluronidase, Bovine      
H7980-30 Hyaluronic Acid Binding Protein, Bovine      
H7980-36A Hyaluronic Acid Binding Protein 1, Recombinant, Human      
H7981 Hyaluronidase, Bovine, Highly Purified      


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