red fluorescent DNA staining
Jos.Broers at molcelb.unimaas.nl
Fri Jul 18 08:58:49 EST 1997
Currently I am examining living cells with Green Fluorescent Protein
and I want to combine this with a red fluorescent dye to visualize DNA
in vital cells using confocal laser scanning microscopy. I cannot use
Hoechst or other dyes with UV excitation, since cells will be damaged
and since our laser cannot excite Hoechst. Does anyone know of a vital
red fluorescent DNA dye with absorption spectrum around 567 nm and
emission above 600 nm? I already tried several dyes from Molecular
Probes (Syto-17 and Syto-64) but they appear to stain no nuclear DNA in
living eukaryotic cells.
Thank you very much for your reply.
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