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    mlh1-antibody-g168-15-ab14206.pdf

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Epigenetics and Nuclear Signaling DNA / RNA DNA Damage & Repair Mismatch Repair
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Anti-MLH1 antibody [G168-15] (ab14206)

  • Datasheet
  • SDS
Submit a review Q&A (10)References (18)

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Immunocytochemistry - Anti-MLH1 antibody [G168-15] (ab14206)
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-MLH1 antibody [G168-15] (ab14206)
  • Flow Cytometry - Anti-MLH1 antibody [G168-15] (ab14206)
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-MLH1 antibody [G168-15] (ab14206)

Key features and details

  • Mouse monoclonal [G168-15] to MLH1
  • Suitable for: Flow Cyt, ICC, IHC-P
  • Reacts with: Mouse, Human
  • Isotype: IgG1

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Protein
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Recombinant Human MLH1 protein (ab131924)
Primary
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Anti-SCP3 antibody (ab15093)
Secondary
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Goat Anti-Mouse IgG H&L (HRP) (ab205719)

View more associated products

Overview

  • Product name

    Anti-MLH1 antibody [G168-15]
    See all MLH1 primary antibodies
  • Description

    Mouse monoclonal [G168-15] to MLH1
  • Host species

    Mouse
  • Tested Applications & Species

    Application Species
    Flow Cyt
    Recombinant fragment
    ICC
    Recombinant fragment
    IHC-P
    Recombinant fragment
    See all applications and species data
  • Immunogen

    Recombinant full length protein.

  • Positive control

    • Tonsil, colon carcinoma. This antibody gave a positive result in IF/ICC when used in the following formaldehyde fixed cell lines: HepG2

Properties

  • Form

    Liquid
  • 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 A purified
  • Clonality

    Monoclonal
  • Clone number

    G168-15
  • Isotype

    IgG1
  • Research areas

    • Epigenetics and Nuclear Signaling
    • DNA / RNA
    • DNA Damage & Repair
    • Mismatch Repair
    • Cancer
    • Oncoproteins/suppressors
    • Tumor suppressors
    • Other

Associated products

  • Compatible Secondaries

    • Goat Anti-Mouse IgG H&L (Alexa Fluor® 488) (ab150113)
    • Goat Anti-Mouse IgG H&L (HRP) (ab205719)
    • Goat Anti-Mouse IgG H&L (DyLight® 488) preadsorbed (ab96879)
  • Isotype control

    • Mouse IgG1, kappa monoclonal [15-6E10A7] - Isotype Control (ab170190)
    • Mouse IgG1, Kappa Monoclonal [B11/6] - Isotype Control (ab91353)
  • Recombinant Protein

    • Recombinant Human MLH1 protein (ab131924)

Applications

The Abpromise guarantee

Our Abpromise guarantee covers the use of ab14206 in the following tested applications.

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

Guaranteed

Tested applications are guaranteed to work and covered by our Abpromise guarantee.

Predicted

Predicted to work for this combination of applications and species but not guaranteed.

Incompatible

Does not work for this combination of applications and species.

Application Species
Flow Cyt
Recombinant fragment
ICC
Recombinant fragment
IHC-P
Recombinant fragment
Application Abreviews Notes
Flow Cyt
1/50.

ab170190 - Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.

 

ICC
Use at an assay dependent concentration.
IHC-P
1/25 - 1/50. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
Notes
Flow Cyt
1/50.

ab170190 - Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.

 

ICC
Use at an assay dependent concentration.
IHC-P
1/25 - 1/50. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.

Target

  • Function

    Heterodimerizes with PMS2 to form MutL alpha, a component of the post-replicative DNA mismatch repair system (MMR). DNA repair is initiated by MutS alpha (MSH2-MSH6) or MutS beta (MSH2-MSH6) binding to a dsDNA mismatch, then MutL alpha is recruited to the heteroduplex. Assembly of the MutL-MutS-heteroduplex ternary complex in presence of RFC and PCNA is sufficient to activate endonuclease activity of PMS2. It introduces single-strand breaks near the mismatch and thus generates new entry points for the exonuclease EXO1 to degrade the strand containing the mismatch. DNA methylation would prevent cleavage and therefore assure that only the newly mutated DNA strand is going to be corrected. MutL alpha (MLH1-PMS2) interacts physically with the clamp loader subunits of DNA polymerase III, suggesting that it may play a role to recruit the DNA polymerase III to the site of the MMR. Also implicated in DNA damage signaling, a process which induces cell cycle arrest and can lead to apoptosis in case of major DNA damages. Heterodimerizes with MLH3 to form MutL gamma which plays a role in meiosis.
  • Tissue specificity

    Colon, lymphocytes, breast, lung, spleen, testis, prostate, thyroid, gall bladder and heart.
  • Involvement in disease

    Defects in MLH1 are the cause of hereditary non-polyposis colorectal cancer type 2 (HNPCC2) [MIM:609310]. Mutations in more than one gene locus can be involved alone or in combination in the production of the HNPCC phenotype (also called Lynch syndrome). Most families with clinically recognized HNPCC have mutations in either MLH1 or MSH2 genes. HNPCC is an autosomal, dominantly inherited disease associated with marked increase in cancer susceptibility. It is characterized by a familial predisposition to early onset colorectal carcinoma (CRC) and extra-colonic cancers of the gastrointestinal, urological and female reproductive tracts. HNPCC is reported to be the most common form of inherited colorectal cancer in the Western world, and accounts for 15% of all colon cancers. Cancers in HNPCC originate within benign neoplastic polyps termed adenomas. Clinically, HNPCC is often divided into two subgroups. Type I: hereditary predisposition to colorectal cancer, a young age of onset, and carcinoma observed in the proximal colon. Type II: patients have an increased risk for cancers in certain tissues such as the uterus, ovary, breast, stomach, small intestine, skin, and larynx in addition to the colon. Diagnosis of classical HNPCC is based on the Amsterdam criteria: 3 or more relatives affected by colorectal cancer, one a first degree relative of the other two; 2 or more generation affected; 1 or more colorectal cancers presenting before 50 years of age; exclusion of hereditary polyposis syndromes. The term 'suspected HNPCC' or 'incomplete HNPCC' can be used to describe families who do not or only partially fulfill the Amsterdam criteria, but in whom a genetic basis for colon cancer is strongly suspected.
    Defects in MLH1 are a cause of mismatch repair cancer syndrome (MMRCS) [MIM:276300]; also known as Turcot syndrome or brain tumor-polyposis syndrome 1 (BTPS1). MMRCS is an autosomal dominant disorder characterized by malignant tumors of the brain associated with multiple colorectal adenomas. Skin features include sebaceous cysts, hyperpigmented and cafe au lait spots.
    Defects in MLH1 are a cause of Muir-Torre syndrome (MuToS) [MIM:158320]; also abbreviated MTS. MuToS is a rare autosomal dominant disorder characterized by sebaceous neoplasms and visceral malignancy.
    Note=Defects in MLH1 may contribute to lobular carcinoma in situ (LCIS), a non-invasive neoplastic disease of the breast.
    Defects in MLH1 are a cause of susceptibility to endometrial cancer (ENDMC) [MIM:608089].
    Note=Some epigenetic changes can be transmitted unchanged through the germline (termed 'epigenetic inheritance'). Evidence that this mechanism occurs in humans is provided by the identification of individuals in whom 1 allele of the MLH1 gene is epigenetically silenced throughout the soma (implying a germline event). These individuals are affected by HNPCC but does not have identifiable mutations in MLH1, even though it is silenced, which demonstrates that an epimutation can phenocopy a genetic disease.
  • Sequence similarities

    Belongs to the DNA mismatch repair mutL/hexB family.
  • Cellular localization

    Nucleus.
  • Target information above from: UniProt accession P40692 The UniProt Consortium
    The Universal Protein Resource (UniProt) in 2010
    Nucleic Acids Res. 38:D142-D148 (2010) .

    Information by UniProt
  • Database links

    • Entrez Gene: 4292 Human
    • Entrez Gene: 17350 Mouse
    • Omim: 120436 Human
    • SwissProt: P40692 Human
    • SwissProt: Q9JK91 Mouse
    • Unigene: 195364 Human
    • Unigene: 196006 Mouse
    • Alternative names

      • COCA 2 antibody
      • COCA2 antibody
      • DNA mismatch repair protein Mlh1 antibody
      • FCC 2 antibody
      • FCC2 antibody
      • hMLH 1 antibody
      • hMLH1 antibody
      • HNPCC 2 antibody
      • HNPCC antibody
      • HNPCC2 antibody
      • MGC5172 antibody
      • MLH 1 antibody
      • MLH1 antibody
      • MLH1_HUMAN antibody
      • MutL homolog 1 (E. coli) antibody
      • MutL homolog 1 antibody
      • MutL homolog 1 colon cancer nonpolyposis type 2 antibody
      • MutL homolog 1, colon cancer, nonpolyposis type 2 (E. coli) antibody
      • MutL protein homolog 1 antibody
      • MutL, E. coli, homolog of, 1 antibody
      see all

    Images

    • Immunocytochemistry - Anti-MLH1 antibody [G168-15] (ab14206)
      Immunocytochemistry - Anti-MLH1 antibody [G168-15] (ab14206)

      ICC/IF image of ab14206 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody ab14206 at 1/50 dilution overnight at +4°C. The secondary antibody (green) was DyLight® 488 goat anti- mouse (ab96879) IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

    • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-MLH1 antibody [G168-15] (ab14206)
      Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-MLH1 antibody [G168-15] (ab14206)
      Formalin fixed paraffin embedded human tonsil stained with MLH1 using ABC and DAB chromogen.
    • Flow Cytometry - Anti-MLH1 antibody [G168-15] (ab14206)
      Flow Cytometry - Anti-MLH1 antibody [G168-15] (ab14206)
      Overlay histogram showing HeLa cells stained with ab14206 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab14206, 1/50 dilution) for 30 min at 22ºC. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22ºC. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353, 2µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.

    • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-MLH1 antibody [G168-15] (ab14206)
      Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-MLH1 antibody [G168-15] (ab14206)
      Immunohistochemical analysis of formalin-fixed, paraffin-embedded Human colon carcinoma tissue, staining MLH1 with ab14206.

    Protocols

    • Flow cytometry protocols
    • Immunohistochemistry protocols
    • Immunocytochemistry & immunofluorescence protocols

    Click here to view the general protocols

    Datasheets and documents

    • SDS download

    • Datasheet download

      Download

    References (18)

    Publishing research using ab14206? Please let us know so that we can cite the reference in this datasheet.

    ab14206 has been referenced in 18 publications.

    • Zhang M  et al. HDAC6 regulates DNA damage response via deacetylating MLH1. J Biol Chem 294:5813-5826 (2019). PubMed: 30770470
    • Mihola O  et al. Histone methyltransferase PRDM9 is not essential for meiosis in male mice. Genome Res 29:1078-1086 (2019). PubMed: 31186301
    • Murakami T  et al. Molecular characterization of sessile serrated adenoma/polyps with dysplasia/carcinoma based on immunohistochemistry, next-generation sequencing, and microsatellite instability testing: a case series study. Diagn Pathol 13:88 (2018). PubMed: 30458818
    • Zhou F  et al. MiR-663a Stimulates Proliferation and Suppresses Early Apoptosis of Human Spermatogonial Stem Cells by Targeting NFIX and Regulating Cell Cycle. Mol Ther Nucleic Acids 12:319-336 (2018). PubMed: 30195770
    • Hodel KP  et al. Explosive mutation accumulation triggered by heterozygous human Pol e proofreading-deficiency is driven by suppression of mismatch repair. Elife 7:N/A (2018). WB . PubMed: 29488881
    View all Publications for this product

    Customer reviews and Q&As

    Show All Reviews Q&A
    Submit a review Submit a question

    1-10 of 10 Abreviews or Q&A

    Question

    ab14206 lot GR76926-1 marque la MLH1 en ICC sur cellules humaines mais pas sur cellules de rat.
    incubation sur la nuit. dilution jusqu'à 1/3.

    Read More

    Abcam community

    Verified customer

    Asked on Oct 03 2012

    Answer

    Merci de nous avoir contactés.

    Je suis désolé d'apprendre que le produit ab14206 que vous avez reçu ne fonctionne pas comme attendu. Les informations que vous m'avez fournies vont nous permettre de chercher l'origine du problème rencontré avec cet anticorps et de prendre les dispositions nécessaires pour assurer une bonne qualité de nos produits.

    Comme convenu, j'ai mis en place l'envoi d'une unité d'un lot différent, le numéro de commande de remplacement gratuit de ce produit est *****.

    Concernant la date de livraison, le système n'avait pas été mis à jour lorsque j'ai regardé la disponibilité du produit. La livraison ne pourra malheureusement pas se faire demain comme je vous l'ai dit par téléphone mais en début de semaine prochaine. Désolé pour cette erreur.

    Vous recevrez prochainement un mail de confirmation comprenant les détails d'expédition.

    N'hésitez pas à me communiquer les résultats obtenus avec ce nouveau lot de ab14206.

    Read More

    Abcam Scientific Support

    Answered on Oct 03 2012

    Question

    Almost no staining in human tonsil FFPE tissue.

    Read More

    Abcam community

    Verified customer

    Asked on Jun 19 2012

    Answer

    Thank you for your call today and for letting us know about the trouble with this antibody.

    As we discussed, I'm sending a free of charge vial of ab92312 on the order *** which should arrive shortly.

    Please keep me updated about the results after using this new antibody, and let me know if you have any further questions or if there is anything else that we can do for you. Have a wonderful day!

    Read More

    Abcam Scientific Support

    Answered on Jun 19 2012

    Question

    Dear sir,

    Can I use your product named Anti-MLH1 antibody [G168-15] (ab14206) do the IHC On chicken? Does the sequence of chicken’s MLH1 is fimillar with the antibody’s (ab14206)sequence?

    Thanks very much for your answer. I am eager to hear from you.

                                 

                                   Yours sincerely,

                                                                

    Read More

    Abcam community

    Verified customer

    Asked on Apr 03 2012

    Answer

    Thank you for contacting us.
    The immunogen for ab14206 is the full length protein. However, the epitope of this antibody is not mapped. We do not know the sequence homology of the epitope with the chicken protein. The homology of the full length protein between human and chicken is 79.6%. We have not tested this antibody in chicken so we do not have any empirical data to support its use in the species.
    I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

    Read More

    Abcam Scientific Support

    Answered on Apr 03 2012

    Question

    Dear sir, Thank you for your sincerely help and adcice. But i have a question why you suggest me change fixation methods while lots of papers uesd 1% paraformaldyhade and 0.25% Ttriton and the results were beautiful.     Do you used this antibody MLH1 any before? Thanks a lot. Goos wishs to you!           

    Read More

    Abcam community

    Verified customer

    Asked on Dec 20 2011

    Answer

    Thank you for your response. I have not had a chance to use MLH1 in my experiments. I recommend changes in fixation based on Abcams recommended protocols for ICC-IF. We recommend that users fix samples either in ice-cold methanol, acetone (1-10 min) or in 3-4% paraformaldehyde in PBS pH 7.4 for 15 min at room temperature. Often when a customer is experiencing issues with a product, changing fixation procedures, permeabilization steps or antigen retrieval will yield positive results. Please let us know if you have any other questions or if there is anything else that Abcam can do to help you reach your research goals.

    Read More

    Abcam Scientific Support

    Answered on Dec 20 2011

    Question

    DESCRIPTION OF THE PROBLEM non-specific staining and high backgroud SAMPLE rat esticula rtissue:seminiferous tubules PRIMARY ANTIBODY MLH1, mouse monoclonal antibody DETECTION METHOD The procedure we follow the prepublised paper Gamma-irradiation increased meiotic cross overs in mouse spermatocytes, and with little remedied. In briefly, MLH1 was diluted at 1:30, applied to each slide,covered with a glass cover slip and sealed with finger oil,and the slides were incubated for 24h at 37 in a humid chamber. On the following day,after removing covers lips,slides were washed in 0.5% tween in PBS solution for 10 min three times at room temperature soaked in blocking solution in a humid chamber for 6h and repeated 0.5% tween in PBS washing for 10min three times at room temperature and for 3min three times at 4 washing for 3 times.Subsequent to the wash, secondary antibody (goat anti-mouse Alexa Fluor 488, 1:100) was applied to the slides. Slides were incubated at 37 in a humid chamber for 90min and were washed three times in 0.5% tween in PBS solution for 10,20 and 30min.Subsequently,slides were stained with DAPI at room temperature for 15 min.And then slides were washed in 0.5% tween in PBS solution 3 times for 5min. At last, a glass cover slip was then applied and sealed . POSITIVE AND NEGATIVE CONTROLS USED no. i dont know how to make positive control. we make negative control,which indicated that goat anti-mouse Alexa Fluor 488 was ok. ANTIBODY STORAGE CONDITIONS 4 centigrade FIXATION OF SAMPLE 1%paraformaldehyde(PFA),pH9.2, solution containing 0.15%TritonX-100 ANTIGEN RETRIEVAL no PERMEABILIZATION STEP Testiculartissue wasshreddedwithtwopairsofforceps,andthereleasedpachytenecellswere spreadevenlyovermicroscopeslideslayeredwithparaformaldehyde(

    Read More

    Abcam community

    Verified customer

    Asked on Dec 16 2011

    Answer

    Thank you for contacting Abcam regarding this issue. I am sorry to here of the problems that you have been experiencing using ab14206. Often, changing the fixation step of your tissue can lead to better results. A methanol fixation may work well for your tissue. I have attached a protocol detailing different fixation options for you. Other have had success using antigen retrieval and I would recommend an antigen retrieval step such as Tris/EDTA pH 9.0 heat induced antigen retrieval. I've attached pdfs of Abcams IHC protocols for you. I would highly recommend using a positive control tissue, tonsil and colon carcinoma are the recommended tissue for this product. I hope that you find these tips useful and wish you the success with your experiments. If you have any questions, please feel free to contact us.

    Read More

    Abcam Scientific Support

    Answered on Dec 16 2011

    Question

    Thank you for the prompt assistance. I would greatly appreciate receiving a new vial of ab 14206 from an other batch or the following replacement antibody for my de-func anti-MLH1:   Anti-MLH1 antibody [4C9C7] (ab76363)

    Read More

    Abcam community

    Verified customer

    Asked on Nov 03 2011

    Answer

    I am sorry this product did not perform as stated on the datasheet and for the inconvenience this has caused. As requested, I have issued a free of charge replacement for one vial of a different lot of ab14206. To check the status of the order please contact our Customer Service team and reference this number. Please note that this free of charge replacement vial is also covered by our Abpromise guarantee. Should you still be experiencing difficulties, or if you have any further questions, please do not hesitate to let us know. I wish you the best of luck with your research.  

    Read More

    Abcam Scientific Support

    Answered on Nov 03 2011

    Question

    I am experiencing a combination of low-to-none background and no specific staining whatsoever. My secondary appears to work with other primaries. .com    

    Read More

    Abcam community

    Verified customer

    Asked on Oct 31 2011

    Answer

    Thanks for the additional information. I agree that the vial of ab14206 you received is not working as expected. If you have purchased this antibody within the last 6 months or so I would be happy to offer a replacement, credit or refund. In your reply, please note the purchase order number or Abcam order reference number associated with the order so I can process your request.

    Read More

    Abcam Scientific Support

    Answered on Oct 31 2011

    Question

    I regret to tell you that the antibody I purchased does not seem to work in the suggested IF applications. I used it in 1/50 dilutions overnight on chromosome spreads of both human and murine spermatocytes, as well as on cryosections of human testis, with 1/1000 dilution of Cy3-conjugated goat anti-mouse IgG(H+L) as secondary antibody. While I understand that there may be many pitfalls with immunfluorescence, believe me that I troubleshooted the system in reasonable detail.   Would you mind contacting some recent customers of the same batch to hear if they experiencing problems? Could you recommend alterative products for IF on human and mouse cells?  

    Read More

    Abcam community

    Verified customer

    Asked on Oct 31 2011

    Answer

    Thank you for your enquiry. I am sorry to hear ab14206 is giving you trouble. MLH1 should be detected in human testis using this antibody so I am curious if you are experiencing high background, non-specific binding (or both) or just not seeing any staining at all? Thanks for the additional information!

    Read More

    Abcam Scientific Support

    Answered on Oct 31 2011

    Question

    I am sorry to send an unfinished mail to you. There are some problems in my foxmail. The customer ordered a MLH antibody (Cat#ab14206,Lot#128993) but he can not detect the positive results in human colon and liver sections by IHC. The related pictures are showed as attachments. Both pictures are the results of detection in colon which is mentioned as positive control in the datasheet. Besides the same second antibody can be work in another IHC detection with Cat#ab3366. So he does not know how to deal with it. Would you give me some advice? Thanks and best regards.

    Read More

    Abcam community

    Verified customer

    Asked on Jul 18 2006

    Answer

    Thank you for the images. Does your sentence "Besides the same second antibody can be work in another IHC detection with Cat#ab3366" mean that the secondary antibody works well? The colon tissue must be colon carcinoma, not normal colon tissue as the latter does not have high levels of MLH1. Please provide a detailed protocol of the customer's staining (using the Abcam questionnaire pasted in the body of an e-mail or via our website). In the future please provide this information as soon as you contact us so we minimise the delay and inconvenience for the customer, Thank you for your support,

    Read More

    Abcam Scientific Support

    Answered on Jul 18 2006

    Question

    I want know if this antibody (anti- MLH1) could reacts on normal rat spermatocytes.

    Read More

    Abcam community

    Verified customer

    Asked on Dec 02 2005

    Answer

    Thank you for your enquiry. Yes, this antibody has been applied against rat cells using immunohistochemistry (ABC method). I am not aware of its application against spermatocytes, nor the expression profile of MLH1. However, I am assuming its expression given that it is part of the repair machinery. We guarantee the antibody to behave as detailed on the datasheet. Should the antibody not behave we operate a 90 day refund or replacement vial policy from the date of delivery. I hope this information helps, please do not hesitate to contact us if you need any more advice or information.

    Read More

    Abcam Scientific Support

    Answered on Dec 05 2005

    Please note: All products are "FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC PROCEDURES"
    For licensing inquiries, please contact partnerships@abcam.com

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