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Protein-embedding technique: a potential approach to standardization of immunohistochemistry for formalin-fixed, paraffin-embedded tissue sections.
Authors:Shan-Rong Shi  Cheng Liu  Jeanette Perez  Clive R Taylor
Affiliation:Department of Pathology, University of Southern California Keck School of Medicine, HMR 204, 2011 Zonal Avenue, Los Angeles, CA 90033, USA.
Abstract:A serial study was performed to develop a protein-embedding technique for standardization of immunohistochemistry (IHC) on formalin-fixed, paraffin-embedded (FFPE) tissue sections. A protein carrier matrix must have two phases, a liquid phase to allow uniform mixing of a protein and a solid phase forming a 'block' that can be fixed and processed in the same manner as human tissue. This standardized protein block would serve as a source of thin sections for control of IHC and therefore must also withstand the boiling conditions of antigen retrieval (AR). After multiple experiments, a method was developed utilizing polymer microsphere (beads) as a support medium for protein. The method showed particular promise for quantitative IHC.
Keywords:
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