Anti-CD3 epsilon/Cd3e Antibody Picoband™

CD3E antibody

Boster Bio Anti-CD3 epsilon/Cd3e Antibody Picoband™ catalog # A02765-2. Tested in ELISA, IHC, WB applications. This antibody reacts with Rat.

Product Info Summary

SKU: A02765-2
Size: 100μg/vial
Reactive Species: Rat
Host: Rabbit
Application: ELISA, IHC, WB

Product Name

Anti-CD3 epsilon/Cd3e Antibody Picoband™

View all CD3E Antibodies

SKU/Catalog Number







Boster Bio Anti-CD3 epsilon/Cd3e Antibody Picoband™ catalog # A02765-2. Tested in ELISA, IHC, WB applications. This antibody reacts with Rat.

Storage & Handling

Store at -20˚C for one year from date of receipt. After reconstitution, at 4˚C for one month. It can also be aliquotted and stored frozen at -20˚C for six months. Avoid repeated freeze-thaw cycles.

Cite This Product

Anti-CD3 epsilon/Cd3e Antibody Picoband™ (Boster Biological Technology, Pleasanton CA, USA, Catalog # A02765-2)




Each vial contains 4mg Trehalose, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg NaN3.




E.coli-derived rat CD3 epsilon/Cd3e recombinant protein (Position: Q21-S108).

*Blocking peptide can be purchased. Costs vary based on immunogen length. Contact us for pricing.

Reactive Species

A02765-2 is reactive to Cd3e in Rat


A02765-2 is guaranteed for ELISA, IHC, WB Boster Guarantee

Background of CD3E

CD3e molecule, epsilon also known as CD3E is a polypeptide which in humans is encoded by the CD3E gene which resides on chromosome 11. It is mapped to 11q23.3. The protein encoded by this gene is the CD3-epsilon polypeptide, which together with CD3-gamma, -delta and -zeta, and the T-cell receptor alpha/beta and gamma/delta heterodimers, forms the T cell receptor-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. The genes encoding the epsilon, gamma and delta polypeptides are located in the same cluster on chromosome 11. The epsilon polypeptide plays an essential role in T-cell development.

Antibody Validation

Boster validates all antibodies on WB, IHC, ICC, Immunofluorescence and ELISA with known positive and negative samples to ensure specificity and high affinity.

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Add 0.2ml of distilled water will yield a concentration of 500ug/ml.

Assay Dilutions Recommendation

The recommendations below provide a starting point for assay optimization. Actual working concentration varies and should be decided by the user.

"Western blot, 0.1-0.25μg/ml, Rat
Immunohistochemistry (Paraffin-embedded Section), 0.5-1μg/ml, Rat
Direct ELISA, 0.1-0.5μg/ml, Rat

Validation Images & Assay Conditions

Gene/Protein Information For Cd3e (Source: Uniprot.Org, NCBI)

Uniprot ID


Gene ID


Gene Name


Full Name

T-cell surface glycoprotein CD3 epsilon chain



Alternative Names

CD3 antigen, delta subunit; CD3; CD3d antigen; CD3d antigen, delta polypeptide (TiT3 complex); CD3d molecule, delta (CD3-TCR complex); CD3-DELTA; CD3e antigen; CD3e antigen, epsilon polypeptide (TiT3 complex); CD3e molecule, epsilon (CD3-TCR complex); CD3-epsilon; CD3g antigen; CD3g antigen, gamma polypeptide (TiT3 complex); CD3g molecule, epsilon (CD3-TCR complex); CD3g molecule, gamma (CD3-TCR complex); CD3G; CD3-GAMMA; FLJ17620; FLJ17664; FLJ18683; FLJ79544; FLJ94613; MGC138597; T3DOKT3, delta chain; T3E; T-cell antigen receptor complex, epsilon subunit of T3; T-cell receptor T3 delta chain CD3E IMD18, T3E, TCRE CD3e molecule T-cell surface glycoprotein CD3 epsilon chain|CD3-epsilon|CD3e antigen, epsilon polypeptide (TiT3 complex)|CD3e molecule, epsilon (CD3-TCR complex)|T-cell antigen receptor complex, epsilon subunit of T3|T-cell surface antigen T3/Leu-4 epsilon chain

*if product is indicated to react with multiple species, protein info is based on the gene entry specified above in "species".

For more info on Cd3e, check out the Cd3e Infographic

Cd3e infographic

We have 30,000+ of these available, one for each gene! check them out.

In this infographic you will see the following information for Cd3e: database IDs, super-family, protein function, synonyms, molecular weight, chromosomal locations, tissues of expression, subcellular locations, post translational modifications, and related diseases, research areas & pathways. If you want to see more information included, or would like to contribute to it and be acknowledged, please contact us [email protected]

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5 Customer Q&As for Anti-CD3 epsilon/Cd3e Antibody Picoband™


My boss were happy with the WB result of your anti-CD3 epsilon/Cd3e antibody. However we have been able to see positive staining in leukocyte cell membrane using this antibody. Is that expected? Could you tell me where is CD3E supposed to be expressed?

Verified Customer

Verified customer

Asked: 2019-11-01


From literature, leukocyte does express CD3E. Generally CD3E expresses in cell membrane. Regarding which tissues have CD3E expression, here are a few articles citing expression in various tissues:
Blood, Pubmed ID: 3267235, 15489334
Leukemic T-cell, Pubmed ID: 15144186, 19690332
Thymus, Pubmed ID: 14702039

Boster Scientific Support

Answered: 2019-11-01


We ordered your anti-CD3 epsilon/Cd3e antibody for ELISA on blood in the past. I am using rat, and I plan to use the antibody for WB next. My lab would like examining blood as well as thymus in our next experiment. Could you please give me some suggestion on which antibody would work the best for WB?

Verified Customer

Verified customer

Asked: 2019-10-21


I have checked the website and datasheets of our anti-CD3 epsilon/Cd3e antibody and it seems that A02765-2 has been tested on rat in both ELISA and WB. Thus A02765-2 should work for your application. Our Boster satisfaction guarantee will cover this product for WB in rat even if the specific tissue type has not been validated. We do have a comprehensive range of products for WB detection and you can check out our website to find out more information about them.

Boster Scientific Support

Answered: 2019-10-21


We have been able to see staining in rat thymus. Do you have any suggestions? Is anti-CD3 epsilon/Cd3e antibody supposed to stain thymus positively?

F. Patel

Verified customer

Asked: 2019-01-22


According to literature thymus does express CD3E. According to, CD3E is expressed in leukocyte, blood, thymus, leukemic t-cell, among other tissues. Regarding which tissues have CD3E expression, here are a few articles citing expression in various tissues:
Blood, Pubmed ID: 3267235, 15489334
Leukemic T-cell, Pubmed ID: 15144186, 19690332
Thymus, Pubmed ID: 14702039

Boster Scientific Support

Answered: 2019-01-22


We are currently using anti-CD3 epsilon/Cd3e antibody A02765-2 for rat tissue, and we are satisfied with the IHC-P results. The species of reactivity given in the datasheet says rat. Is it true that the antibody can work on dog tissues as well?

Verified Customer

Verified customer

Asked: 2018-08-06


The anti-CD3 epsilon/Cd3e antibody (A02765-2) has not been validated for cross reactivity specifically with dog tissues, though there is a good chance of cross reactivity. We have an innovator award program that if you test this antibody and show it works in dog you can get your next antibody for free. Please contact me if I can help you with anything.

Boster Scientific Support

Answered: 2018-08-06


We are interested in using your anti-CD3 epsilon/Cd3e antibody for positive thymic t cell selection studies. Has this antibody been tested with western blotting on spleen tissue? We would like to see some validation images before ordering.

Verified Customer

Verified customer

Asked: 2017-09-13


Thanks for your inquiry. This A02765-2 anti-CD3 epsilon/Cd3e antibody is tested on rat thymus tissue, spleen tissue, lymphaden tissue. It is guaranteed to work for ELISA, IHC-P, WB in rat. Our Boster guarantee will cover your intended experiment even if the sample type has not been be directly tested.

Boster Scientific Support

Answered: 2017-09-13


Total: $315


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