Biotin binds to avidin and streptavidin in a very powerful, fast, and highly specific way. In addition, as biotins bound to streptavidin and avidin are very strong even in high temperature, various acidities and proteolytic activity, this interaction is widely used and applied in  biotechnology sector.Fluorescent substances bound to streptavidin or avidin are widely used for secondary detection in histochemistry, FISH, flow cytometry, microarray and blot analysis, and BioActs offers avidin or streptavidin bound to Flamma® Fluors developed by powerful fluorescent technology with a wide range of line-up. Excitation/Emission (nm): 495 / 522 nm.