Cholera toxin B subunit is used for tract-tracing in neurological research, taking advantage of GM1 ganglioside binding and retrograde transport. CF™660R is a bright and exceptionally photostable dye that absorbs at 663 nm and emits fluorescence at 682 nm in the borderline spectral region between far-red and near-IR. CF™660R is ideal for confocal microscopy, where it can add a long wavelength color in multi-color imaging.
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