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Avidin D, Fluorescein labeled, having an excitation at 495 nm and an emission at about 515 nm, is made from our highly purified Avidin D by a special labeling technique. This product has a high fluorochrome to protein ratio and is the reagent we recommend for routine immuno-fluorescence applications. Compared to conventional primary and secondary fluorescent labeling techniques, Fluorescein Avidin D can provide greater sensitivity and lower background staining. (For even higher sensitivity and specific applications, see Fluorescein Avidin DCS.)
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