• Product name

    Anti-CD90 / Thy1 antibody [F15-42-1] (FITC)
    See all CD90 / Thy1 primary antibodies
  • Description

    Mouse monoclonal [F15-42-1] to CD90 / Thy1 (FITC)
  • Host species

  • Conjugation

    FITC. Ex: 493nm, Em: 528nm
  • Tested applications

    Suitable for: Flow Cytmore details
  • Species reactivity

    Reacts with: Human, Monkey
  • Immunogen

    Synthetic peptide corresponding to Human CD90/ Thy1.

  • Positive control

    • MOLT4 human T-cell lines. human T lymphoma cell line HUT78.
  • General notes

    This product should be stored undiluted. This product is photosensitive and should be protected from light. Should this product contain a precipitate we recommend microcentrifugation before use.



Our Abpromise guarantee covers the use of ab11155 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
Flow Cyt Use at an assay dependent concentration.

Use neat. Use 10µl of the suggested working dilution to label 106 cells in 100µl.




ab91356 - Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.



  • Function

    May play a role in cell-cell or cell-ligand interactions during synaptogenesis and other events in the brain.
  • Sequence similarities

    Contains 1 Ig-like V-type (immunoglobulin-like) domain.
  • Cellular localization

    Cell membrane.
  • Information by UniProt
  • Database links

  • Alternative names

    • CD7 antibody
    • CD90 antibody
    • CD90 antigen antibody
    • CDw90 antibody
    • FLJ33325 antibody
    • MGC128895 antibody
    • T25 antibody
    • Theta antigen antibody
    • Thy 1 antibody
    • Thy 1 cell surface antigen antibody
    • Thy 1 membrane glycoprotein antibody
    • Thy 1 T cell antigen antibody
    • Thy 1.2 antibody
    • Thy-1 antigen antibody
    • Thy-1 membrane glycoprotein antibody
    • Thy1 antibody
    • Thy1 antigen antibody
    • Thy1 T cell antigen antibody
    • Thy1.1 antibody
    • Thy1.2 antibody
    • THY1_HUMAN antibody
    • Thymus cell antigen 1, theta antibody
    see all


  • ab11155 staining CD90/Thy1 in human HUT78 T cells by Flow Cytometry analysis.


This product has been referenced in:

  • Zhang Q  et al. Downregulation of antidifferentiation noncoding RNA promotes chondrogenic differentiation and calcification of ligamentum flavum-derived mesenchymal stem cells. J Cell Biochem 120:3401-3414 (2019). Read more (PubMed: 30368870) »
  • S Lashkari B & Anumba DO Estradiol alters the immune-responsiveness of cervical epithelial cells stimulated with ligands of Toll-like receptors 2 and 4. PLoS One 12:e0173646 (2017). Read more (PubMed: 28296959) »
See all 11 Publications for this product

Customer reviews and Q&As

1-6 of 6 Abreviews or Q&A


Thank you very much for your interest in abcam antibodies. To our knowledge,these primary antibodies (ab27333, ab47095, ab30437 and ab11155)have not been tested in Western Blot and ICC/IF. They have been tested only in Flow cytometry as shown on the datasheets. Therefore, I can offer a discount off a future purchase if you buyone or allof themnow, test it/them in Western Blot and/or ICC/IF and submit feedback to us in the form of an Abreview. It doesn’t matter whether the Abreview is positive or negative, we would just really like to receive your feedback. The discountwould be to the value of 1 free primary antibody for each tested antibody. If you are interested in this offer, please follow these steps: 1. Reply to this e-mail to let me know that you would like to proceed and teston of those antibodiesin Western Blot and/or ICC/IF. I will then send a discount code. This code must be issued before purchasingthe antibodyso please wait for my reply before ordering. 2. Purchasethe primary antibody to be testedeither by phone, fax, or online (www.abcam.com). 3. Test it in Western Blot and/or ICC/IF. 4. Let us know the results, positive or negative, using our Abreview system (this will take about 10 minutes and images are great if you have them!). To find out how to submit an Abreview, please visit: https://www.abcam.com/abreviews. 5. After the review is submitted to us, the discount code becomes active. Simply place your new order by phone, fax, or on the web and mention the discount code. The discount can be redeemed for any ordered and the discount code is valid for 4 months after issue. We are always pleased to obtain feedback about our products and any information is greatly appreciated! Even ifthe tested antibodyturns out to be unsuitable for Western Blotor ICC/IF, you will still receive the discount on your next purchase after your Abreview has been submitted. Please let me know if you have any questions about this offer and I would be happy to help you further. The Terms and Conditions of this offer can be found at: www.abcam.com/collaborationdiscount. I would like to confirm that ab106163 (Mouse IgG1 conjugated to FITC)can be used asisotype control with ab27333, ab47095, ab30437 and ab11155.

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If the antibody datasheets only list "flow cytometry" in the Applications section, then that is the only application that has been tested. It is possible that the antibodies could also work for western blotting or ICC, but these applications have not been tested, and they are not covered by our guarantee.

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A cells-only control with no antibody will show the contribution of autofluorescence of the cells themselves. Most people use this to set up the flow cytometer. An isotype control (cells incubated with the same isotype of antibody as the target-specific antibody) will include autofluorescence signal but also the non-epitope-specific interaction of the antibody with the samples. Examples of these interactions include the binding of the Fc region of the antibody to Fc receptors on the cells, and any non-epitope-specific antibody-protein interactions (for instance, hydrophobic interactions) . You could use this isotype control to adjust your flow cytomer settings but most people include it as an experimental control, after setting up the flow cytometer with cells-only. You will be able to see if there is any signal from the isotype interactions by comparing the isotype control to the cells-only control. The antibodies conjugated to FITC that you asked about are all isotype IgG1 (ab30437, ab27333, ab11155). An appropriate isotype control is ab106163: Click here (or use the following: https://www.abcam.com/index.html?datasheet=106163). I hope this helps. If you have any questions, please contact me.

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Thank you for contacting Abcam. I am replying to your question on behalf of my colleague Ada. The antibodies that have FITC conjugated to them do not need the anti-FITC antibody ab112511, if you simply want to detect FITC fluorescence by flow cytometry. If you have any questions or concerns, or if I have misunderstood your question, please reply.

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                    Hi,   Our customer would like to know if the following antibodies are of IgG1, kappa  or lambda light chains (Information on datasheet only stated Isotypes IgG1/ IgM/ IgG2a)?   Item                                      Format                 Cat # Anti-CD200 antibody      unconjugated    ab17225 Anti-CD146 antibody      PE                           ab78488 Anti-CD34 antibody         unconjugated    ab6330 Anti-CD71 antibody         unconjugated    ab117720 Anti-CD24 antibody         FITC                       ab30350 Anti-CD73 antibody         unconjugated    ab81720                                                 PE                           ab106697 Anti-CD105 antibody      PE                           ab91238                                                 Unconjugated   ab11414 Anti-Cd45 antibody         PE                           ab90960 Anti-STRO1 antibody      unconjugated    ab102969 Anti-CD90 antibody         unconjugated    ab23894                                                 FITC                       ab11155 Anti-CD14 antibody         FITC                       ab86896               Anti-cytokeratin 15         unconjugated    ab1385 IgG2a Isotype control     FITC                       ab81197   Looking forward to your soonest reply. Thank you.   Best regards, Penny Hor BITA LIFESCIENCE SDN. BHD. C-23-05, Dataran 32, No. 2, Jalan 19/1, 46300 Petaling Jaya, Selangor Darul Ehsan, Malaysia t +603 7960 8286    e info@bitalifesc.com.my f +603 7960 8262     

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Thank you for contacting us. In general, the immunoglobulin class (IgG1, IgG2a, IgGM, etc.) and light chain sub-class (kappa or lambda) is listed on the online datasheet. When the light chain is not listed, then the light chain sub-class has not been determined. In these instances, it is probably that the light chain sub-class is kappa, given that murine serum immunoglobulins are 95% kappa and 5% lambda, as discussed in the reference at the following link: http://www.ncbi.nlm.nih.gov/pubmed/3116408 Mol Immunol. 1987 Jul;24(7):751-7. PMID:3116408 Of the antibodies your customer has enquired about, The light chain sub-class has been determined for three: ab90960, ab86896, and ab1385. All are kappa light chain. I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

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Thank you for your enquiry. We test this antibody on the human T lymphoma cell line HUT78 but CD90 is reportedly expressed by fibroblast subsets. The following reference may be of interest, it uses this clone (F15-42-1) for staining of fibroblasts. Aicher, W.K. et al. (1999). Serum response elements activate and cAMP responsive elements inhibit expression of transcription factor Egr-1 in synovial fibroblasts of rheumatoid arthritis patients. Int Immunol. 11(1):47-61. http://intimm.oxfordjournals.org/cgi/content/full/11/1/47 The following link may be of assistance regarding CD90 expression. http://mpr.nci.nih.gov/prow/guide/1381917985_g.htm We did not find anything to suggest that CD90 is expressed by smooth muscle cells although there are references in the literature detailing fibroblasts populations that express both CD90 and smooth muscle alpha actin. I hope that this information is of some assistance.

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