Improving upon 2-D electrophoresis, 2-D DIGE enables detection and quantitation of real biological differences in protein abundance between different samples using cyanine dye labelling with size- and charge-matched, spectrally resolvable CyDye DIGE Fluor minimal dyes.
Mitsui, which is under-appreciated as a player in the CD media business, was a pioneer (with Kodak) in offering a "gold" phthalocyanine dye recording layer that--independent tests generally confirm--enable a longer archival life than the earlier "green" cyanine dye layers do.
However, most DVD-R discs tested are based on a stabilized Cyanine dye. Since results from these samples of similar dye types are quite different, there appears to be varying proprietary modifications made to the dye formulations, and perhaps different manufacturing processes and quality control procedures.