In article <951208201746.20807328 at servms.fiu.edu>, JEFF ELHAI
<CYANO at servms.fiu.edu> wrote:
> Does anyone have an idea why tobacco roots should fluoresce yellow (perhaps
> a bit green) with 490 nm excitation?
>> Wan-Ling Chiu
Do you see the fluorescence on the sell walls? The lignified walls
fluoresce in that color. I am not sure of the excitation wavelength range