• Product name
  • Description
    Rabbit polyclonal to IL-22
  • Host species
  • Specificity
    The peptide sequence is <50% identical to other interleukins in this region.
  • Tested applications
    Suitable for: ELISA, IHC-Pmore details
  • Species reactivity
    Reacts with: Mouse, Human
  • Immunogen

    Synthetic peptide corresponding to Human IL-22 aa 40-67.


  • Positive control
    • Recombinant Human IL22 protein (ab49821) can be used as a positive control in WB. Human spleen or tonsil.


  • Form
  • Storage instructions
    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage buffer
    pH: 7.20
    Preservative: 0.1% Sodium azide
    Constituents: 0.21% Potassium phosphate, 0.812% Sodium chloride
  • Concentration information loading...
  • Purity
    Immunogen affinity purified
  • Clonality
  • Isotype
  • Research areas


Our Abpromise guarantee covers the use of ab18499 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 1/100000.
IHC-P 1/500.


  • Function
    Cytokine that contributes to the inflammatory response in vivo.
  • Sequence similarities
    Belongs to the IL-10 family.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • Cytokine Zcyto18 antibody
    • IL 10 related T cell derived inducible factor antibody
    • IL 21 antibody
    • IL 22 antibody
    • IL D110 antibody
    • IL TIF antibody
    • IL-10-related T-cell-derived-inducible factor antibody
    • IL-22 antibody
    • IL-TIF antibody
    • IL21 antibody
    • Il22 antibody
    • IL22_HUMAN antibody
    • ILD110 antibody
    • ILTIF antibody
    • Interleukin 10 related T cell derived inducible factor antibody
    • interleukin 21 antibody
    • Interleukin 22 antibody
    • Interleukin-22 antibody
    • MGC79382 antibody
    • MGC79384 antibody
    • TIFa antibody
    • TIFIL 23 antibody
    • TIFIL23 antibody
    • UNQ3099/PRO10096 antibody
    • zcyto18 antibody
    see all


  • Immunohistochemistry using ab18499 at 1/500 on paraffin-embedded section of human tonsil.


This product has been referenced in:
  • Chen X  et al. Accumulation of T-helper 22 cells, interleukin-22 and myeloid-derived suppressor cells promotes gastric cancer progression in elderly patients. Oncol Lett 16:253-261 (2018). Read more (PubMed: 29928409) »
  • Pellegrini C  et al. Expression of IL-23/Th17-related cytokines in basal cell carcinoma and in the response to medical treatments. PLoS One 12:e0183415 (2017). IHC-P ; Human . Read more (PubMed: 28829805) »
See all 5 Publications for this product

Customer reviews and Q&As

1-10 of 10 Abreviews or Q&A

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Monkey Tissue sections (Intestine)
Antigen retrieval step

Abcam user community

Verified customer

Submitted Nov 02 2018

Abcam has not validated the combination of species/application used in this Abreview.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Rhesus monkey Tissue sections (Jujenum)
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: Ventana CC1 (Tris/EDTA)

Dr. Li Li

Verified customer

Submitted Jun 05 2017

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Rat Tissue sections (Inflammed colon)
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: Citrate buffer
Inflammed colon

Abcam user community

Verified customer

Submitted Aug 12 2015

Immunohistochemistry (Frozen sections)
Blocking step
BSA as blocking agent for 30 minute(s) · Concentration: 3% · Temperature: RT°C
Mouse Tissue sections (Uterus)

Dr. Mukesh Jaiswal

Verified customer

Submitted Nov 13 2013


Thank you for contacting me.

I am sorry but you are correct in thinking the Abreview system does not currently support the addition of an Abreview using dot blot. Your customer can do this by submitting the information directly to me (please send to xxxxx). I will need the customer to write directly to me in order to be able to activate the testing discount.
I will need the following information:

1) A brief description of your experimental procedures
2) An attached JPEG or PNG formatted image illustrating your data
2) Your customers feelings on the results
3) If your customer would like their name to be shown with their review or if you prefer to be anonymous.

With the image supplied, please note any descriptive details that will help other researchers interpret the results.

Your customer will be awarded the same number of points as if they had submitted the review online using a standard Abreview form. They will receive 120 points for text with an additional 100 points for including an image. These points can be used for discounts on future purchases or Amazon gift cards.

For further information regarding Abreviews, please see


Thanks in advance for submitting your review. Feel free to contact me if you have any further questions.

Please reply to this email if you have any questions.

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Expiration date: June 7, 2012

I am very pleased to hear you would like to accept our offer and test ab18499 in IHC-Fr. This code will give you 1 freeprimary antibodybefore the expiration date. To redeem this offer, please submit an Abreview forab18499 in IHC-Frand include this code in the “Additional Comments” section so we know the Abreview is for this promotion. For more information on how to submit an Abreview, please visit the site: www.abcam.com/Abreviews.

The code will be active once the Abreview has been submitted and can be redeemed in one of the following ways: 1) Call to place your order and mention the code to our customer service department; 2) Include the code in your fax order; 3) Place your order on the web and enter the promotional code.

Any feedback that you can provide will be greatly appreciated, whether positive or negative. If you have any further questions, please do not hesitate to contact us. We look forward to receiving your Abreview and wish you luck with your research.

The terms and conditions applicable to this offer can be found here: www.abcam.com/collaborationdiscount.

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Vielen Dank für Ihre Email und die Daten mit dem ab18499.
Es tut mir leid zu sehen, dass der ab18499 nicht in gefrorenen Schnitten zu funktionieren scheint. Ich habe mir auch Ihr Protokoll angeschaut, und möchte Ihnen Folgendes noch vorschlagen:
1.) Ich kann empfehlen eine Fixierung mit PFA 4% für 10 Minuten und eine Fixierung mit Methanol noch auszuprobieren. In der Tat haben verschieden Fixierungsmethoden oft einen grossen Einfluss auf die Immunomarkierung. Zum Beispiel fixiert PFA durch kovalentes Krosslinken von Proteinen und Methanol/Aceton durch Präzipitieren von den Proteinen. Dies kann die Epitope unterschiedlich maskieren/demaskieren und daher sollte es für jeden Antikörper optimisiert werden.
2.) Ich kann auch empfehlen doch eine Verdünnung von 1/100 mal auszuprobieren, da die Sensibilität vielleicht tiefer ist bei gefrorenen Schnitten.
Bitte lassen Sie mich wissen, ob diese Vorschläge geholfen haben, das Resultat zu verbessern. Ich freue mich wieder von Ihnen zu hören.

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A good alternative to tonsilis spleen and maybe also tissue from the digestive tract, for instance colon or small intestine.

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Customer is having problems with some Abcam antibodies for IHC (Patology department). Please find below the description of the problem and the protocol. The antibodieswere purchased on February this year, so they are not covered by the Abpromise. Could you please verifyif some protocol optimization would improve the results? Abcam IHC antibodies - Description of the problem Antibodies' dilution: we used the highest concentrations recommended in the datasheets. Antibody Code Lot Positive control Retrieval Results Rabbit polyclonal to IL10, 500µl ab34843 GR32935-1 Tonsil/Chronic dermatitis Citrate/EDTA Unspecific Rabbit polyclonal to IL22, 50µg ab18499 914021 Tonsil Citrate/EDTA No staining Rabbit polyclonal to IL17, 100µg ab79056 GR12888-4 Tonsil Citrate/EDTA No staining synovial arthritis Citrate/EDTA Unspecific Rabbit polyclonal to IL6, 200µl ab6672 GR8495-2 Tonsil Citrate/EDTA GOOD synovial arthritis Citrate/EDTA Unspecific Rabbit polyclonal to TGF beta, 100µl ab66043 GR19363-3 Tonsil Citrate/EDTA GOOD Rabbit polyclonal to Interferon gamma, 100µg ab9657 GR31972-1 Tonsil Citrate/EDTA No staining cervical squamous cell carcinoma Citrate/EDTA Positive for a small number of cells Rabbit polyclonal to IL4, 100µg ab9622 GR20231-2 Tonsil Citrate/EDTA No staining Chronic dermatitis Citrate/EDTA No staining Spinocellular carcinoma Citrate/EDTA Unspecific Abcam IHC Questionnaire 1) Abcam product code: ab34843 (GR32935-1); ab18499 (914021); ab79056 (GR12888-4); ab9657 (GR31972-1); ab9622 (GR20231-2). 2) Antibody storage conditions (temperature/reconstitution etc): -20°C 3) Description of the problem: no staining: ab18499, ab79056, ab9657, ab9622 or unspecific staining: ab34843, ab79056, ab6672, ab9622 4) Sample preparation Species: human Type of sample (Fresh frozen sections, perfusion fixed frozen sections; PFA/formalin fixed paraffin embedded sections, cells in culture, other): Positive control: human tonsil Negative control: 5) Fixation step Yes/No: Yes If yes: xylol Fixation time: 2 h Fixation temperature: 60°C 6) Antigen retrieval method: · Citrate – 2 min at 100°C · EDTA – 2 min at 100°C · Trypsin – 30 min at 4°C 7) Permeabilization method Did you do a permeabilization step (details please) or add permeabilizing agent in any dilution buffers? Yes Permeabilizing agent and concentration: 5ml of Tween in 9 L of PBS. 8) Blocking agent (eg BSA, serum…): None Concentration: Blocking time: Blocking temperature: 9) Endogenous peroxidases blocked? Yes (hydrogen peroxide for 30 min) Endogenous biotins blocked? No. 10) Primary antibody (If more than one was used, describe in “additional notes”): Concentration or dilution: ab34843 = 1/400 ab18499 = 1/500 ab79056 = 1/400 ab6672 = 1/400 ab9657 = 0.25 ug/ml ab9622 = 0.25 µg/ml Diluent buffer: primary antibody diluent from Dako. Incubation time: 1 h at RT or overnight in humidified chamber at 4°C 11) Secondary antibody: ENVISION Polymer kit from Dako: · Anti-Mouse – 30 min – wash 3x in PBS – Monoclonal · Anti-Rabbit – 30 min – wash 3x in PBS – Polyclonal 12) Washing after primary and secondary antibodies: Buffer: PBS Number of washes: 3x 13) Detection method: DAB 14) How many times have you run this staining? Do you obtain the same results every time? yes What steps have you altered to try and optimize the use of this antibody? Antigen retrieval and positive controls.

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I am sorry to see that your customer is having so much difficulty with so many antibodies. Can you please ask your customer to clarify the fixation step? They listed "xylol" as the fixative, which I expect is just a misunderstanding. Xylol is typically used to remove paraffin, not to fix tissues. Most labs use a formaldehyde fixative, such as a solution of PFA or formalin. Are the samples all sections of paraffin-embedded tissue? The one suggestion I have is for the customer to test different amounts of time for the antigen retrieval step. Two minutes may not be long enough or for some antibodies, not retrieval is necessary and may even be harmful. I recommend testing ab18499 on three tonsil sections that have had either no AR, 2 minutes, or 15 minutes with citrate 10mM, pH6. For other antibodies, the customer may simply need to apply more antibody. For instance, on the datasheet for anti-IL17 ab79056, for the stain of IL17 in dog lymph node, the antibody was used at a dilution of 1/100. Your customer applied it at 1/400 to the tonsil section. Depending on the expression of IL17 in tonsil, the 1/400 dilution may be insufficient. Could you ask the customer to please send you an image of the good IL6 stain, and an image of one of the non-specific stains, such as the ab34843 on tonsil? When you send the customer's reply regarding the xylol, could you attach those images too? If the customer does not have them, that's OK.

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Thank you for contacting us. We would be very interested in your customer testing ab18499 with Dot Blot with human samples. If you could please send me the name, email address and institute of your customer I will create the discount code for you.

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