Catalog / IL-2 antibodies

IL-2 antibodies

We make 16 IL-2 antibodies for 5 species, 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-2 ELISA kits, IL-2 ELISpot kits, and IL-2 FluoroSpot kits.

What differs between these antibodies

Which species they are for

Available for Human, Mouse, Bovine, Ferret, and Porcine. The species decides which clones there are, so it is the first thing to choose. Many also cross-react with related species, so if you work in one we do not list here, check the reactivity on the product page.

Which clone

We make 14 IL-2 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. A sandwich assay needs two clones that bind different sites; the capture and detection pairs below are matched for that.

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. One is formulated for Western blot.

Capture and detection pairs

To build your own IL-2 ELISA or ELISpot, coat with the unconjugated capture antibody and detect with the biotinylated detection antibody, then a streptavidin conjugate. These are the same pairs our own kits use.

SpeciesCaptureDetectionFor
HumanELISA, ELISpotMT2A91/2C95MT8G10, biotinELISA, ELISpot
PorcineELISA, ELISpotMT264/267MT265, biotinELISA, ELISpot

About IL-2

Interleukin 2 (IL-2) is predominantly produced by activated T cells. IL-2 promotes the proliferation, differentiation, and survival of antigen-activated T cells and NK cells. After antigen stimulation, the cytokine also promotes the differentiation of T cells into effector and memory T cells. Therefore IL-2 plays an important role in the body's response to infection. IL-2 is also key to tolerance, as it promotes the differentiation of certain immature T cells into regulatory T cells in the thymus, ultimately preventing autoimmune diseases. 

Also known asInterleukin-2, Interleukin 2, IL-2, IL2, T cell growth factor
Produced byT cell, Th1, Th2, Th17, Tfh
SpeciesHuman, Mouse, Bovine, Ferret, Porcine
Gene IDs
Bos taurus: 280822
Homo sapiens: 3558
Mus musculus: 16183
Mustela putorius furo: 101674110
Sus scrofa: 396868

Find the right IL-2 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.

Species

What you are measuring in

Application

What you will use it for

Conjugate

Unlabelled or labelled

Formulation

Preservative and concentration

Clone

If you already know which


Start by choosing a species.


Related reading

Guides and tutorials covering IL-2 and how to use these antibodies.

Tutorials

Tutorial

2026-04-13

How to couple antibodies to EYRAbeads

In this post, we run through the general protocol for coupling antibodies to EYRAbeads for custom, home-brew assay development.