Biotinylated Anti-Avidin has been widely used as an amplifying reagent in immunohistochemistry,?in situ?hybridization, microarray assays, ELISAs, blots, and many other applications. The capability of binding avidin via either biotin binding sites or through antigen binding sites, makes this biotinylated antibody unique.?Our antibodies to avidin are produced in goats using our highly purified avidin and isolated by affinity chromatography. Anti-Avidin does not bind streptavidin and Anti-Streptavidin does not recognize avidin. These antibodies provide opportunities to significantly amplify signals in many applications.

These antibodies can be used either as part of preformed complexes or in sequence to amplify fluorescent signals. When used in sequence, the target is first labeled with fluorochrome-conjugated avidin or streptavidin, followed by incubation with Biotinylated Anti-Avidin or Biotinylated Anti-Streptavidin, followed by a second layer of fluorochrome-conjugated avidin or streptavidin. This sequence can be repeated. This multi-layered approach introduces more fluorochromes at the target site and can provide a multi-fold amplification over a single layer.

These affinity purified antibodies are also available unconjugated or fluorescein-labeled.

The following figure illustrates different experimental setups used to achieve increasing levels of sensitivity.