Canine IL-12 Antibody

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Product Details
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Canine IL-12 Antibody Summary

Species Reactivity
Detects canine IL-12 in direct ELISAs and Western blots. In direct ELISAs, approximately 40% cross-reactivity with recombinant human IL‑12 p35/p40 and recombinant feline IL-12 p35/p40 is observed, and less than 10% cross-reactivity with recombinant rat IL-12 p35/p40 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
Chinese hamster ovary cell line CHO-derived recombinant canine IL-12
p40: Ile23-Ser329; p35: Arg26-Ser222 (Asp63Glu, Tyr64Leu, Ile65Tyr, Pro66Ser)
Accession # p40: Q28268; p35: Q28267
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Canine IL-12 (Catalog # 2118-CL)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: IL-12

Interleukin 12 (IL-12) is the founding member of the IL-12 family of heterodimeric cytokines, which have important immunological functions. IL-12 is composed of two disulfide-linked subunits of 35 kDa and 40 kDa, respectively. The 35 kDa subunit (p35) is an alpha -helical protein homologous to IL-6 and G-CSF. The 40 kDa subunit (p40) contains one fibronectin type III and one Ig C2-like domain, and has a high degree of structural homology to type I cytokine receptors. Whereas p35 subunit is unique to IL-12, the p40 subunit is also utilized in IL-23. Mature canine p35 is a 197 amino acids (aa) protein that is secreted as a heterodimer linked to p40. It contains two potential N-linked glycosylation sites and shares 91%, 86%, 85%, 56%, and 55% aa sequence identity with feline, human, porcine, rat and mouse p35, respectively. Mature p40 contains 307 aa and can exist in multiple forms, including monomer, homodimer, heterodimer linked to p19 (forming IL-23), and heterodimer linked to p35 (forming IL-12). It is upregulated by substances such as LPS and CpG that activate antigen-presenting cells. Mature canine p40 shows 94%, 85%, 84%, 65%, and 65% aa sequence identity to feline, human, porcine, rat and mouse p40, respectively. Cells known to produce IL-12 include macrophages, dendritic cells, monocytes, Langerhans cells, neutrophils, and keratinocytes. The activities of IL-12 are mediated by the receptor complex composed of two type I transmembrane proteins: a 100 kDa ligand-binding subunit (IL-12 R beta 1) and a 130 kDa signal transducing subunit (IL-12 R beta 2). IL-12 facilitates hematopoietic stem cell proliferation, induces NK cell proliferation, promotes IgG production (in mice), and potentiates the expansion and late activation of Th1 CD4+ T cells (1‑5).

  1. Buttner, M. et al. (1997) Cytokine 10:241.
  2. Park, A.Y. and P. Scott (2001) Scand. J. Immunol. 53:529.
  3. Trinchieri, G. et al. (2003) Immunity 19:641.
  4. Brombacher, F. et al. (2003) Trends Immunol. 24:207.
  5. Lankford, C.S. and D.M. Frucht (2003) J. Leukoc. Biol. 73:49.
Long Name
Interleukin 12
Entrez Gene IDs
3592 (Human); 16159 (Mouse); 84405 (Rat); 403977 (Canine); 102115316 (Cynomolgus Monkey); 493741 (Feline); 703205 (Rhesus Macaque)
Alternate Names
CLMF p35; CLMF1; Cytotoxic lymphocyte maturation factor 35 kDa subunit; IL-12 subunit p35; IL12; IL-12; IL-12, subunit p35; IL12A; interleukin 12, p35; interleukin 12A (natural killer cell stimulatory factor 1, cytotoxic lymphocytematuration factor 1, p35); interleukin-12 alpha chain; interleukin-12 subunit alpha; natural killer cell stimulatory factor 1, 35 kD subunit; NF cell stimulatory factor chain 1; NK cell stimulatory factor chain 1; NKSF1; p35

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

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