• Product nameAnti-TNF alpha antibody
    See all TNF alpha primary antibodies
  • Description
    Rabbit polyclonal to TNF alpha
  • SpecificityNo reactivity is detected against human TNF-b (lymphotoxin). This antibody will recognize the cell-bound precursor of TNFa as a 26,000 protein in immunoblots, particularly in denatured samples. This antibody is also useful for neutralization of human and primate TNFa activity in bioassays. It does not neutralize the biological activity of lymphotoxin.
  • Tested applicationsELISA, IHC-P, IHC-Fr, Neutralising, WB, ICC/IF, IHC-FoFrmore details
  • Species reactivity
    Reacts with: Mouse, Chicken, Guinea pig, Dog, Human, Pig, Fish, Cynomolgus Monkey
    Predicted to work with: Monkey, Non Human Primates
  • Immunogen

    Recombinant full length protein (Human).

  • Positive control
  • General notesEndotoxin content by LAL is <10 pg/ml.



Our Abpromise guarantee covers the use of ab6671 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ELISA 1/200 - 1/1000.
IHC-P 1/100 - 1/200. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
IHC-Fr 1/100 - 1/200.
Neutralising 1/200.
WB 1/100 - 1/200. Can be blocked with Human TNF alpha full length protein (ab140754). Suitable for use as a positive control for Western blot against recombinant TNFalpha produced in E.Coli.
ICC/IF Use at an assay dependent dilution. PubMed: 19458984
IHC-FoFr Use at an assay dependent dilution.


  • FunctionCytokine that binds to TNFRSF1A/TNFR1 and TNFRSF1B/TNFBR. It is mainly secreted by macrophages and can induce cell death of certain tumor cell lines. It is potent pyrogen causing fever by direct action or by stimulation of interleukin-1 secretion and is implicated in the induction of cachexia, Under certain conditions it can stimulate cell proliferation and induce cell differentiation.
  • Involvement in diseaseGenetic variations in TNF are a cause of susceptibility psoriatic arthritis (PSORAS) [MIM:607507]. PSORAS is an inflammatory, seronegative arthritis associated with psoriasis. It is a heterogeneous disorder ranging from a mild, non-destructive disease to a severe, progressive, erosive arthropathy. Five types of psoriatic arthritis have been defined: asymmetrical oligoarthritis characterized by primary involvement of the small joints of the fingers or toes; asymmetrical arthritis which involves the joints of the extremities; symmetrical polyarthritis characterized by a rheumatoidlike pattern that can involve hands, wrists, ankles, and feet; arthritis mutilans, which is a rare but deforming and destructive condition; arthritis of the sacroiliac joints and spine (psoriatic spondylitis).
  • Sequence similaritiesBelongs to the tumor necrosis factor family.
  • Post-translational
    The soluble form derives from the membrane form by proteolytic processing.
    The membrane form, but not the soluble form, is phosphorylated on serine residues. Dephosphorylation of the membrane form occurs by binding to soluble TNFRSF1A/TNFR1.
    O-glycosylated; glycans contain galactose, N-acetylgalactosamine and N-acetylneuraminic acid.
  • Cellular localizationSecreted and Cell membrane.
  • Information by UniProt
  • Database links
  • Alternative names
    • APC1 antibody
    • APC1 protein antibody
    • Cachectin antibody
    • DIF antibody
    • Differentiation inducing factor antibody
    • Macrophage cytotoxic factor antibody
    • MCF antibody
    • Necrosin antibody
    • TNF a antibody
    • TNF alpha antibody
    • TNF antibody
    • TNF Macrophage Derived antibody
    • TNF Monocyte Derived antibody
    • TNF Superfamily Member 2 antibody
    • TNF superfamily, member 2 antibody
    • TNF, macrophage derived antibody
    • TNF, monocyte derived antibody
    • TNF-a antibody
    • TNF-alpha antibody
    • TNFA antibody
    • TNFA_HUMAN antibody
    • TNFSF2 antibody
    • Tumor necrosis factor alpha antibody
    • Tumor necrosis factor antibody
    • Tumor necrosis factor ligand superfamily member 2 antibody
    • Tumor Necrosis Factor Precursor antibody
    • Tumor Necrosis Factor, Membrane Form antibody
    • Tumor necrosis factor, soluble form antibody
    • Tumour Necrosis Factor Alpha antibody
    see all

Anti-TNF alpha antibody images

  • ab6671 staining TNF alpha in Cynomolgus Monkey dendritic cells/macrophages from inlamed skin tissue sections by Immunohistochemistry (IHC-P - paraformaldehyde-fixed, paraffin-embedded sections). Tissue was fixed with formaldehyde and blocked with 10% serum for 20 minutes at room temperature; antigen retrieval was by heat mediation in citrate buffer, pH6.0. Samples were incubated with primary antibody (1/100) for 30 minutes at room temperature. A Biotin-conjugated Goat anti-rabbit IgG polyclonal (1/2000) was used as the secondary antibody.

    See Abreview

  • ab6671 staining human artery tissue sections by IHC-P.  Sections were fixed in formaldehyde and subjected to heat mediated antigen retrieval in citrate buffer (pH 6.0) prior to blocking with 1.5% serum for 10 minutes.  The primary antibody was diluted 1/100 and incubated with the sample for 24 hours at 4°C.  An HRP-conjugated goat anti-rabbit antibody was used as the secondary.

    See Abreview

  • ab6671 staining TNF alpha from human colon by immunohistochemistry (formalin/PFA-fixed paraffin-embedded sections). Cells were formaldehyde fixed prior to blocking in 10% serum for 2 hours at 21°C. The primary antibody was diluted 1/100 and incubated with the sample for 2 hours at 21°C. Alexa fluor® 680 goat polyclonal, diluted 1/5000, was used as the secondary.

    See Abreview

  • Immunohistochemical analysis of formalin-fixed, paraffin embedded fish tissue, staining TNF alpha with ab6671.

    Tissue was fixed with Bouin's fixative; antigen retrieval was by heat mediation in a citrate buffer (pH 6). Samples were incubated with primary antibody (1/600 in diluent) for 2 hours. An HRP-conjugated goat anti-rabbit polyclonal IgG was used as the secondary antibody.

    See Abreview

References for Anti-TNF alpha antibody (ab6671)

This product has been referenced in:
  • Ansar S  et al. Pro-inflammatory mediators and apoptosis correlate to rt-PA response in a novel mouse model of thromboembolic stroke. PLoS One 9:e85849 (2014). ICC/IF ; Mouse . Read more (PubMed: 24465746) »
  • Sawada H  et al. Reduced BMPR2 expression induces GM-CSF translation and macrophage recruitment in humans and mice to exacerbate pulmonary hypertension. J Exp Med 211:263-80 (2014). Read more (PubMed: 24446489) »

See all 27 Publications for this product

Product Wall

Application Immunocytochemistry/ Immunofluorescence
Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 1% · Temperature: 25°C
Sample Guinea pig Cell (Lung and Heart)
Specification Lung and Heart
Permeabilization No
Fixative Formalin

Matthew Williams

Verified customer

Submitted Jan 30 2014

Application Immunohistochemistry (Frozen sections)
Blocking step BSA as blocking agent for 30 minute(s) · Concentration: 3% · Temperature: RT°C
Sample Mouse Tissue sections (Uterus)
Specification Uterus
Permeabilization No
Fixative Paraformaldehyde

Dr. Mukesh Jaiswal

Verified customer

Submitted Nov 13 2013

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Blocking step Serum as blocking agent for 20 minute(s) · Concentration: 10% · Temperature: Rt°C
Antigen retrieval step Heat mediated - Buffer/Enzyme Used: Citric buffer pH6.0
Sample Cynomolgus Monkey Tissue sections (Dendritic cells /macrophages from Inflamed skin)
Specification Dendritic cells /macrophages from Inflamed skin
Permeabilization No
Fixative Formaldehyde

Jing Ma

Verified customer

Submitted Sep 12 2013

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Sample Fish Tissue sections (Spleen, kidney, gill, liver, digestive tract, thym)
Specification Spleen, kidney, gill, liver, digestive tract, thym
Fixative Bouin's Fluid
Antigen retrieval step Heat mediated - Buffer/Enzyme Used: Sodium Citrate pH6

Mr. Paolo Ronza

Verified customer

Submitted Jan 28 2013

Gracias por tu paciencia.

No hay un protocolo concreto para usar este anticuerpo en ensayos de bloqueo. De hecho, me comentan que ab140754 es la proteína completa, no un péptido, ya que este anticuerpo se generó usando la...

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Te pido disculpas por la espera, normalmente lleva algo de tiempo añadir productos nuevos al catálogo.

El péptido inmunógeno del anticuerpo ab6671 ha sido añadido al catálogo bajo la referencia http:/...

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Gracias por contactar con Abcam.

Mi compañera Ariana no se encuentra hoy en la oficina.

Thank you for your inquiry and support of our products.

This antibody (ab6671: Anti-TNF alpha antibody) is produced against who...

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Gracias por facilitarnos los detalles.

He creado un código de descuento: XXXX para testar ab6671 en IHC-P en muestras de rodaballo o lenguado senegalés.

El código caduca el día XXXXX.

Este c&oac...

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I wanted to apologize the length of time it has taken to get this onto our catalog but we have been able to add the blocking peptide to ab6671 anti-TNF alpha. The product is ab128426, TNF alpha protein (http://www.abcam.com/TNF-alpha-protein-ab128426.h...

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Application Western blot
Sample Spermophilus tridecemlineatus Tissue lysate - whole (White adipose tissue)
Loading amount 8 µg
Specification White adipose tissue
Gel Running Conditions Reduced Denaturing (10%)
Blocking step Milk as blocking agent for 2 hour(s) and 30 minute(s) · Concentration: 5% · Temperature: 4°C

Mr. James Bjork

Verified customer

Submitted Jan 03 2012