Catalog / IL-21 antibodies

IL-21 antibodies

We make 4 IL-21 antibodies for human, unconjugated or conjugated to biotin. This page explains how they differ, so you can pick the one your experiment needs.

Rather use a ready-made kit? See our IL-21 ELISA kits and IL-21 ELISpot kits.

What differs between these antibodies

Which clone

We make 3 IL-21 antibody clones. A clone is one specific antibody that binds one site on its target, so it is what you cite or reorder by name. Choose the clone that has been shown to work in your application.

Which conjugate

Unconjugated antibodies carry no label. You coat a plate with them as the capture antibody, or use them where the antibody itself is the reagent, such as for neutralization. Biotinylated antibodies are detected with a streptavidin conjugate, such as streptavidin-ALP or streptavidin-HRP.

Which formulation

Some come azide-free. Sodium azide preserves the standard formulation but is toxic to cells, so choose the azide-free version for work with live cells.

About IL-21

Interleukin 21 (IL-21) is primarily secreted by CD4 T cells (particularly follicular T cells and Th17) and is an important regulator of immune responses. For Th17 cells, IL-21 is an autocrine regulator sustaining Th17 development. IL-21 also regulates the development of other T cells as well as B cells, NK cells, and dendritic cells. Areas of particular interest for research on IL-21 include autoimmune and inflammatory diseases, cancer research, and basic studies on, e.g., B cells and T cells, especially on Th17 cells.

Also known as	Interleukin 21, IL-21, IL21
Produced by	T cell, Tc, Th17, Tfh
Species	Human
Gene ID	Homo sapiens: 59067

Find the right IL-21 antibody

Choose what your experiment needs. When your choices match a single antibody, we'll link you to its product page for prices and ordering.

Application

What you will use it for

Conjugate

Unlabelled or labelled

Formulation

Preservative and concentration

Clone

If you already know which

Next, choose what you will use it for.