There shouldn't be any problem if you are doing immunoperoxidase staining. If
you are doing fluorescence, you will have to be sure you remove all traces of
eosin from the tissues since eosin itself is fluorescent.
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Has anyone had any trouble prestaining tissues in eosin and then
doing IHC? I'm making cell blocks from clear fluid full of cells
embe= dded in agar before processing and I just was wanting a way to
be able to s= ee it. Does anyone see a problem with a drop of eosin