[Histonet] nucleus details

[Sonkin, Mikhanie]

The last 3 months we have problem with nucleus staining for
gastro-intestinal bx, and liver bx. The nuclei looks "milky", without any
details. It does not happened with all tissue: 2-3 blocks from 50-100. And
it is not every day. And it is happened with tissue into screen cassettes
only. So we have suggetion that it may air incide the cassettes that prevent
tissue from full processing.
Did somebody have the same problem?
I will be glad to hear any suggetions.
Sincerely, Misha Sonkin
P.S. Sorry for my English