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cFluor<sup>®</sup> R668 Anti-Human CD3 (UCHT1)

cFluor® R668 Anti-Human CD3 (UCHT1)

SKU R7-20140
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The UCHT1 monoclonal antibody binds to human epsilon chain of the CD3 antigen/T-cell antigen receptor, a 20 to 30-kDa protein complex. This complex contains a CD3γ, a CD3δ, a CD3ζ (CD247), two CD3ε, and a T-cell receptor (α/β or γ/δ) heterodimer (1). CD3 is found on all mature T cells, NK T cells and thymocytes. It plays a role in recognizing antigen, activating cytotoxic T cell and T helper cell, and signal transduction (2). The antibody was conjugated to a fluorophore and purified by affinity chromatography.



Clone:                  UCHT1

Reactivity:          Human, Cross-Reactivity: Chimpanzee

Format:               cFluor® R668*

Isotype:               Mouse IgG1, κ

Tested Dilution:  5 μL / test

Application:        Flow Cytometry

Storage:               2-8°C and protected from Light. Do not freeze

Formulation:       Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and 0.2% BSA (Origin USA)

Data Sheets:       TDS SDS



Each lot of this antibody is quality control tested using flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 µL per 1 million cells in a staining volume of 100 µL. If whole blood is analyzed, then use 5 µL per 100 µL. It is recommended that users titrate the antibody to obtain the optimal result for their specific application.



  1. Dong, D., et al. 1981. Nature. 573, 546–552
  2. Weiss A, et al. 1991. Semin Immunol. (5):313-24


These products are for research use only. Not intended for use in diagnostic procedures.


*cFluor™ R668 is equivalent to CF®647 manufactured and provided by Biotium, Inc. under an Agreement between Biotium and Cytek (LICENSEE). The manufacture, use, sale, offer for sale, or import of the product is covered by one or more of the patents or pending applications owned or licensed by Biotium. The purchase of this product includes a limited, non-transferable immunity from suit under the foregoing patent claims for using only this amount of product for the purchaser’s own internal research. No right under any other patent claim, no right to perform any patented method, and no right to perform commercial services of any kind, including without limitation reporting the results of purchaser's activities for a fee or other commercial consideration, is conveyed expressly, by implication, or by estoppel.

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