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Hi,
I would like to know what are the best nucleic acid stain for live cells 
in the visible range (458-647nm). We want to make long term experiments, 
more than 6 hours, and we are looking for a bright (not bleaching) and 
not toxic DNA stain. I have read SYTO dyes can be toxic for cells. What' 
your experience on DRAQ5 or ethidium bromide (dihydroethidium)?
Thanks all for your help,
Maria Calvo

Maria Calvo, PhD

Unitat de Microscòpia Confocal
Serveis Cientificotècnics-C.Casanova
Facultat de Medicina-UB
Casanova 143
Barcelona 08036

Tel: 34 934037159/39930
Fax: 34 934039946
E-mail: [log in to unmask]