fluorescent RNA stain for microscopy

[Dick Haugland]

There are NO known fluorescent stains that are SPECIFIC for RNA,
particularly in live cells.  There are some dyes that are somewhat
RNA-selective but the selectivity is only a few-fold.  Even Hoechst dyes
are not totally DNA specific.  See Section 8.1 of Molecular Probes'
Handbook for an extensive discussion of dyes for staining nucleic acids.
It is available on line at our Web site (http://www.probes.com) or is
free on request.