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Another possibility would be to fluoresently label a silane and then use 
the labeled silane to label the glass.  No idea how specific it would be 
for glass over cellulose.

Kurt

On 8/29/2011 10:17 AM, MODEL, MICHAEL wrote:
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> Maybe fluorescent poly-lysine? Looks like such things exist, though expensive
>
> Mike
>
> -----Original Message-----
> From: Confocal Microscopy List [mailto:[log in to unmask]] On Behalf Of Martin Wessendorf
> Sent: Monday, August 29, 2011 12:58 PM
> To: [log in to unmask]
> Subject: fluorescent stain for glass
>
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> Dear confocal list--
>
> Is anyone aware of a means by which ordinary glass fibers can be
> fluorescently labeled?  (--I'd prefer not going the route of a negative
> stain if possible.)  They'll be present in a cellulose matrix, which
> ideally would NOT be labeled by the stain.
>
> Thanks--
>
> Martin Wessendorf