• Product name
    Anti-Cytokeratin 5 + 6 antibody [D5/16 B4]
  • Description
    Mouse monoclonal [D5/16 B4] to Cytokeratin 5 + 6
  • Host species
  • Tested applications
    Suitable for: IHC-Pmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Cytokeratin 5 (Human).

  • Positive control
    • Skin


  • Form
  • Storage instructions
    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage buffer
    Preservative: 0.05% Sodium azide
    Constituent: 1% BSA
  • Concentration information loading...
  • Purity
    Protein G purified
  • Clonality
  • Clone number
    D5/16 B4
  • Isotype
  • Light chain type
  • Research areas


Our Abpromise guarantee covers the use of ab17133 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
IHC-P 1/25 - 1/50. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.


  • Relevance
    Cytokeratin 5 (58 kD) is a high molecular weight, basic type of cytokeratin expressed in basal, the intermediate and the superficial cell layers of stratified epithelia as well as transitional epithelia, complex epithelia and in mesothelial cells and mesothelioma. Cytokeratin 6 (56 kD) is also a high molecular weight, basic type cytokeratin expressed by proliferating squamous epithelium often paired with Cytokeratin 16.
  • Cellular localization
  • Database links
  • Alternative names
    • Cytokeratin 5 antibody
    • Cytokeratin 6A antibody
    • Cytokeratin 6B antibody
    • DDD antibody
    • EBS2 antibody
    • K5 antibody
    • K6A antibody
    • K6B antibody
    • Keratin 5 antibody
    • Keratin 6A antibody
    • Keratin 6B antibody
    • Keratin type II cytoskeletal 5 antibody
    • KRT 5 antibody
    • KRT 5A antibody
    • KRT 6A antibody
    • KRT 6B antibody
    see all


This product has been referenced in:
  • Mazzocchi AR  et al. In vitro patient-derived 3D mesothelioma tumor organoids facilitate patient-centric therapeutic screening. Sci Rep 8:2886 (2018). Read more (PubMed: 29440675) »
  • Li X  et al. Encapsulated papillary carcinoma of the breast: A clinicopathological study of 49 cases. Curr Probl Cancer N/A:N/A (2018). Read more (PubMed: 29731165) »
See all 7 Publications for this product

Customer reviews and Q&As

1-7 of 7 Abreviews or Q&A

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Dog Tissue sections (lung)
Antigen retrieval step
Heat mediated
Blocking step
BSA as blocking agent for 2 hour(s) and 0 minute(s) · Concentration: 1% · Temperature: RT°C


Verified customer

Submitted Jan 09 2018


Merci de nous avoir contactés.

L'anticorps ab17133 a une concentration de 16µg/ml.

Veuillez noter que le tampon de stockage contient 0.05% d'azoture de sodium et 1% de BSA, 2 éléments qui peuvent poser problème lors du couplage de l'anticorps.

Le laboratoire qui fournit cet anticorps m'a également informé que malheureusement ils ne peuvent pas fournir cet anticorps dans un tampon sans azoture de sodium ou BSA.

J'espère que ces informations vous seront utiles. N'hésitez pas à nous contacter de nouveau si vous avez d'autres questions.

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Expiration date: 15/12/2012
I am very pleased to hear you would like to accept our offer and test ab17133 in Mouse. This code will give you: 1 free PRIMARY ANTIBODY before the expiration date. To redeem this offer, please submit an Abreview for Mouse and include this code in the “Additional Comments” section so we know the Abreview is for this promotion. Please remember that submission of the Abreview is sufficient for the discount code to become active.
For more information on how to submit an Abreview, please visit the site: www.abcam.com/Abreviews.
Remember, we publish both positive and negative Abreviews on our datasheets so please submit the results of your tests. 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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Thank you for your enquiry and your interest in our products.
I have the confirmation from the Lab that this antibody has been validated only with human tissue specimens and we do not have any cross reactive with mouse samples.
If you wish to use and test ab17133, I could certainly offer you a discount code for testing. In case you are interested in this initiative, I would advise you to visit the following site where the Terms and Conditions of our testing initiative can be found at: www.abcam.com/collaborationdiscount.
I hope this helps and if I can assist further, please do not hesitate to contact me.

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Thank you for confirming that information.

Kate is currently away from the office but I will try to assist you as best I can.

As I am sure you are aware, the antibody purchased, Anti-Cytokeratin 5 + 6 antibody (ab17133) was ordered quite a long time ago. Almost a year prior to the report of the complaint. We would therefore not usually offer a replacement antibody as this requires that the complaint be made within 6 months of the purchase of the antibody to comply with the Abpromise guarantee. In this case I will offer a replacement vial of the antibody (ab17133) if your customer would like as a goodwill gesture.

I would however suggest that a few protocol alterations may be worthwhile in order to try to optimise the results observed.

1. I would suggest improving the specificity and strength of the detection by incubating with the primary antibody overnight as 4°C, not 37°C as is currently used. This antibody may not be suitable for use at elevated temperatures and we often find superior performance when used at lower temperatures for longer. This has been employed by the customer who has used this antibody previously and achieved the following staining:


2. You have mentioned that the antigen retireval has been optimised. How has this been performed? For this particular target or tissue? I would suggest trying the Citrate buffer currently used as well as Tris-EDTA (pH 9) under a few different times (3, 5, 10 and 20 minutes). This can often provide drastic differences in performance and optimisation may be required for each target you are interested in.

If you would like for me to add ab17133 to your next order please do let me know.

I look forward to hearing from you.

Read More


Thank you for taking the time to complete our questionnaire and contact us. I am sorry to hear you have had difficulty obtaining satisfactory results from this antibody.

The details you have kindly provided will enable us to investigate this case for you and this is also helpful in our records for monitoring of quality.

I would like to reassure you that ab17133 is tested and covered by our 6 month guarantee for use in IHC-P and human samples. In the event that a product is not functioning in the applications cited on the product data sheet, we will be pleased to provide a credit note or free of charge replacement.

Reviewing this case, I would appreciate if you can confirm some further details which will help me to investigate this case:

1. Please confirm the Abcam order reference number and date of purchase. According to our records, the last vial of this antibody purchased from ### was 14 months ago last March, order #####.

2. Which species is the sample from, is this human?

3. I can suggest to consider trying different times for antigen retreival. Has this already been tried?This can sometimes require some optimization.

4. Is the sedondary antibody and detection kit working well with other primary antibodies?

I hope this information is helpful, thank you for your cooperation. Please do not hesitate to contact me again with the further requested details.

Read More
Abcam guarantees this product to work in the species/application used in this Abreview.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Human Tissue sections (skin)
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: Citrate pH 6.0
Blocking step
Serum as blocking agent for 10 minute(s) · Concentration: 1.5%

Abcam user community

Verified customer

Submitted Apr 07 2009


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