Almost any dye of this type will transfer most or all of its fluorescence to the heme if it has <630 nm emission. Dyes excitable at 532 nm with emission beyond 675 nm might work if the emission is totally beyond that of heme's absorption but there essentially are none, except a few protein dyes, or the ones there are tend to be nonfluorescent in water. Alan Arnold wrote: > I am looking for a dye that will stain hemoglobin. It needs to be able to > be excited by a 532nm laser and emit in the range of either 580nm or 675nm. > > Thanks for the help, > > Alan
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