PE anti-human TRA-1-81 Antibody

Pricing & Availability
TRA-1-81 (See other available formats)
Regulatory Status
Other Names
Mouse IgM, κ
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Product Citations
NCCIT (human teratocarcinoma cell line) stained with TRA-1-81 PE
  • Tra-1-81_PE_102108.jpg
    NCCIT (human teratocarcinoma cell line) stained with TRA-1-81 PE
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330707 25 tests 88€
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330708 100 tests 199€
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The TRA-1-81 antibody reacts with a 200-240 kD cell surface antigen expressed by human embryonic stem cells (ESC), embryonic germ cells (EG), and embryonal carcinoma cells. The expression of TRA-1-81 on human ESC is downregulated upon differentiation. Further studies have shown that TRA-1-81 is a neuroaminidase-resistant carbohydrate epitope expressed on podocalyxin, a member of mucin-like glycoprotein with CD34 family. Podocalyxin is a type I tranmembrane sialoprotein with anti-adhesion property.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Antibody Type
Host Species
Human embryonic carcinoma cell line 2102Ep cl.2A6
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
The antibody was purified by affinity chromatography, and conjugated with PE under optimal conditions.
Lot-specific (to obtain lot-specific concentration, please enter the lot number in our Concentration and Expiration Lookup or Certificate of Analysis online tools.)
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C. Do not freeze.

FC - Quality tested

Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.

Excitation Laser
Blue Laser (488 nm)
Green Laser (532 nm)/Yellow-Green Laser (561 nm)
Application Notes

Additional reported applications (for the relevant formats) include: immunofluorescence cell staining1, immunoprecipitation1, Western blotting1,2, ELISA1, and immunohistochemistry1 of acetone-fixed frozen tissue sections and formalin-fixed paraffin-embedded sections.

Application References
  1. Andrews PW, et al. 1984. Hybridoma. 3:347.
  2. Schopperle WM and Dewolf WC. 2007. Stem Cells. 25:723.
Product Citations
  1. Ababneh NA, et al. 2020. Stem Cell Research. 72.77986111. PubMed
  2. Ababneh NA, et al. 2021. Stem Cell Research. 54:102358. PubMed
AB_1089246 (BioLegend Cat. No. 330707)
AB_1089243 (BioLegend Cat. No. 330708)

Antigen Details

Mucin-like protein, CD34 family member, 200-240 kD
embryonic stem cells (ESC), embryonic germ cells (EG), embryonal carcinoma cells
Cell Type
Embryonic Stem Cells
Biology Area
Cell Biology, Immunology, Stem Cells
Antigen References

1. Andrews PW, et al. 1984. Hybridoma. 3:347.
2. Schopperle WM and Dewolf WC. 2007. Stem Cells. 25:723.
3. Takeda T, et al. 2000. Mol. Biol. Cell. 11:3219.

Gene ID
5420 View all products for this Gene ID
View information about TRA-1-81 on

Related FAQs

What type of PE do you use in your conjugates?
We use R-PE in our conjugates.
Go To Top Version: 2    Revision Date: 11-05-2014

For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.


*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.

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