We offer a broad range of Alexa Fluor® fluorescent streptavidin conjugates (Table 1 and Table 3) and avidin conjugates (Table 2). These dyes represent a major breakthrough in the development of fluorescent labeling reagents and, without exception, produce the best and brightest conjugates we have ever tested. Benefits of the Alexa Fluor® dyes and their conjugates include exceptionally bright conjugates, excellent photostability, and a broad range of emission colors. These characteristics make Alexa Fluor® dyes the best choice for most imaging applications.