Tetanus toxoid, biotin

Tetanus toxoid, biotin

3803-19S

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Biotinylated tetanus toxiod (lyophilized)

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Product specifications

Intended use

This biotinylated tetanus toxoid (TT) antigen is intended to be used for detection of TT-specific IgG-secreting cells in ELISpot and FluoroSpot assays. For research use only. Not for use in diagnostic procedures.

Serum/Plasma samples

Description
Tetanus toxoid (TT) is the inactivated toxin derived from Clostridium tetani. TT-biotin is used in the detection step of ELISpot and FluoroSpot and is added after the removal of cells. In FluoroSpot assays, TT-biotin can be added together with other antigens (having different tags). For information on assay setup, please view datasheets for human IgG ELISpot and FluoroSpot.

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Product details

ProductTetanus toxoid, biotin
ApplicationELISpot, FluoroSpot
ReactivityHuman
Supplied in

Lyophilized

Contents

Biotinylated tetanus toxiod (lyophilized)

Shipping and Storage

Shipping

Shipped at ambient temperature.

Storage

Store at -20 °C or below upon receipt. 

PBMC from a healthy blood donor were pre-incubated for 72 h with R848 and recombinant IL-2. The cells were then washed and added to an ELISpot plate (150,000 cells/well) coated with anti-human IgG antibodies. After overnight incubation cells were removed and spots from tetanus toxoid specific IgG secreting cells were detected by addition of biotinylated Tetanus toxoid followed by Streptavidin-ALP.

Find out which analyte combinations we have evaluated in T cell FluoroSpot and which combinations are affected by capture effects or not. 

What is a capture effect?

When capture antibodies with different specificities are coated together, capture of one cytokine may affect the secretion of other cytokines. This is usually more pronounced when studying T cell responses with polyclonal stimuli compared to antigen-specific responses. Capture effects are seldom a problem and can often be counteracted by addition of an anti-CD28 antibody.

Tutorial, Published December 28, 2023

Incubation strategies for success in ELISpot and FluoroSpot
We've made a handy table summarizing incubation times for different analytes to make your research planning for the ELISpot and FluoroSpot assay a little easier.
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