Science 217, 1252-5 (1982) says 5% n-Propyl gallate in glycerol does
the job. Of course it then was not tested on GFP.
To me, it seems to preserve S65T fluorescence quite well.
However, I recently tried Permafluor embedding
medium from Immunotech (Marseille, France) with initially very good
results. But when I examined the slides two weeks later, I observed a
high bacjground fluorescence with FITC filters. H33258 (bisbenzimide)
in contrary was looking quite well.
Was it wrong to store the slides at RT? Would they better be kept in
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