R&D Systems offers a wide range of antibodies to cytokines, adhesion molecules, proteases, neurotrophic factors, stem cell factors, signal transduction molecules, and developmental proteins. Monoclonal and polyclonal antibodies are available, labeled or unlabeled. The majority of polyclonal antibodies are supplied as antigen affinity-purified IgG preparations. The range of over 13,000 antibody products is available for a variety of model organisms.


The R&D Systems Approach to Quality

Our commitment to quality is unmatched. Learn more about how we generate our high-quality antibodies.

Bulk Antibodies

We have the ability to scale up antibody production to meet your needs. Economical pricing means you don't have to sacrifice quality to meet your budget.

Custom Antibody Development

Utilize our expertise in cloning antigens and in-house antibody development processes to create the antibody of your choice.


Optimized protocols for Flow Cytometry, Immunohistochemistry, Western blot, and other applications.

Immunohistochemistry and Immunocytochemistry Antibodies

Highly specific antibodies for IHC and ICC. Click to learn more and see a listing.

Flow Cytometry Antibodies

Conjugated antibodies for surface and intracellular staining. Available in 100 tests and or 25 test sizes.

Matched Antibody Pairs for ELISA

Qualified capture and detection antibody pairs with protein standard.

Blocking/Neutralizing Antibodies

Our extensive collection of proteins and our bioassay expertise allow us to provide the best and most dependable selection of blocking/neutralizing antibodies on the market.