I know using eosin as a tissue dye during processing has been a recent discussion. My lab has been experiencing issue with the cobalt blue we use currently. At embedding, small biopsies are not seen on blue sponges, white sponges turn blue. Biopsies that are wrapped are not turning blue, the paper is not allowing the blue thru. Eosin has come up as a suggestion. I know it is known to fluoresce. What is everyone's experience with this?? The only FISH test we are running is Her2 by pathvysion. What recipe are you all using?? On the processor?? Thank you so much. Melissa
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