Tetramethylrhodamine B isothiocyanate (mixed isomers) labeled dextrans. The fluorescence intensity of TRITC-dextrans varies much less than with FITC-dextrans. TRITC-dextran has an excitation maximum at 550 nm and an emission maximum at 571 nm at pH 9. TRITC-dextran is mainly used for studying permeability and microcirculation. It can also be used as a molecular size marker, for studies of drug delivery and more.
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