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TRA-1-81 Antigen Mouse anti-Human, PE, Clone: TRA-1-81, BD

Mouse Monoclonal Antibody

Manufacturer:  BD Biosciences 560161

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Catalog No. BDB560161

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The TRA-1-81 monoclonal antibody reacts with a pluripotent-stem-cell-specific epitope on a high-molecular-weight transmembrane glycoprotein. The TRA-1-81 antigen is an epitope on the same keratan sulfate core molecule, podocalyxin, as 4 other distinct antigens on tumor-derived cell lines, TRA-1-60, GCTM2, K4, and K21. The expression of TRA-1-81 antigen is stage-specific and can be used to characterize embryonic cells and monitor their differentiation. The antigen is found on teratocarcinoma (embryonal carcinoma or EC), embryonic inner cell mass (but not morula or trophoblast), and embryonic stem (ES) cells. As human EC and ES cells undergo differentiation, expression of TRA-1-81 antigen is lost.

Host Species: Mouse
Clone: TRA-1-81
Isotype: IgM, κ
Species Reactivity: Human
Immunogen: Human Embryonal Carcinoma Cell Line

Flow Cytometry



TRA-1-81 Antigen
Aqueous buffered solution containing BSA and ≤0.09% sodium azide.
IgM, κ
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
Flow Cytometry
Affinity Purified
Human Embryonal Carcinoma Cell Line
100 Tests
Cell Biology
Product Certifications


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