Is it possible to use formalin-fixed, paraffin-embedded (FFPE) kits and protocols to isolate biomolecules from PAXgene Tissue fixed, paraffin-embedded (PFPE) tissue?

No. Procedures developed for the extraction of biomolecules from FFPE tissues include prolonged proteinase K digestion and heating steps to remove chemical modifications introduced by formalin. Since the PAXgene Tissue System does not chemically modify biomolecules, these steps are not necessary and, in fact, lead to degradation of biomolecules. Instead, use dedicated PAXgene Tissue kits and supplementary protocols for extraction of biomolecules from PAXgene Tissue treated samples.
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