Sometimes the ideal antibody to label your cells of interest just isn’t available with a fluorochrome conjugate. Fortunately secondary antibodies target unconjugated primary antibodies to extend the range of possibilities available to you in your fluorescent cell–staining experiments. They can also be used to amplify the staining signal of the primary antibody, helping to put your results beyond question.
As well as secondary antibodies, we offer the bacterial protein streptavidin, which has a high affinity for biotin (a.k.a. vitamin H/B7), to help further your research. Both can be conjugated in various ways to suit different detection methods.