Product Details
Catalog Number: 6-8000-101
Applications: Cell Assays
Type: Cell Isolation-Separation
Storage: Store all components at 2 - 8°C. Store reconstituted Fab-Strep at -80°C. (Buffer CI may also be stored at 15 - 25 °C)
Shipping: Frozen (Polar Packs)
Species Reactivity: Human
Downloads: Datasheet (pdf)
Product Sizes
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1 Kit$113.50Add to Cart

Fab-TACS® - Traceless Affinity Cell Selection - is a positive cell isolation approach based on our Strep-tag® technology. CD3 Fab-TACS® Magnetic Microbead Starter Kit allows label-free isolation of human CD3+ T cells from peripheral blood mononuclear cells (PBMCs). CD3 is a co-receptor that associates with the T cell receptor and plays a role in T cell activation.

Low affinity, Fab fragments fused to a Twin-Strep-tag® (Fab-Streps) are incubated with Strep-Tactin® Magnetic Microbeads to form a complex that stably binds to the cell surface. After specific labeling, target cells are bound to a magnet and non-target cells efficiently washed away. In a final step, the addition of biotin causes the release of the isolated cells from magnetic microbeads. The Fab-Streps self-dissociate from the cell surface due to their low affinity. After removing biotin by washing, the isolated cells are ready for further positive selection or depletion steps or can directly be used for further downstream applications.


  • High purity of > 90%
  • Scalable reagents
  • Label-free cells due to low affinity Fab fragments
  • Non-activated cells

The Kit Contains:

  • Strep-Tactin® Magnetic Microbeads
  • CD3 Fab-Strep, human
  • 10x Buffer CI
  • 100 mM Biotin stock solution