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Primary and Secondary Antibodies

Providing highly cited primary and secondary antibodies, we have you covered for your ELISA, western blot, immunohistochemistry or other assay needs. Use the Antibody Explorer search tool to view and compare our antibodies from brands you know and trust, including Sigma-Aldrich, Millipore, Upstate, Chemicon, and Calbiochem.


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Duolink® secondary antibody technology from Sigma-Aldrich
Duolink®, Protein Interaction Technology
See what you’ve never seen before with amplified Duolink® secondary antibody technology.
Combine the specificity of secondary antibodies, with the sensitivity afforded by rolling circle amplification to detect endogenous proteins in cells and tissues.
Search for and buy antibodies specific to organelle and subcellular markers
Organelle Marker Antibodies

• Comprehensive panel for organelle &
  subcellular localization studies
• Polyclonals and monoclonals for
  double-staining immunofluorescence
• Designed to recognize multiple species
  with low cross-reactivity

Prestige Antibodies®
• Most Validated Antibodies on the
• Supported by the Human Protein Atlas
• Monoclonal and Polyclonal

Protocols for Prestige antibody western blots, immunoblotting, antibody purification and more.
Antibody Resource Center
Comprehensive collection of antibody protocols, protocol tips and tricks for Western blot, immunohistochemistry (IHC), immunofluorescence (IF), and ELISA presented in technical articles, webinars, and videos.

For Research Use Only. Not for use in diagnostic procedures.

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.