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Protocol for HER2 FISH Using a Non-cross-linking, Formalin-free Tissue Fixative to Combine Advantages of Cryo-preservation and Formalin Fixation
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Effects of fixative and fixation protocols on assessment of Her-2/neu oncogene amplification status by fluorescence

Carlynn Willmore-Payne1, Ken Metzger, Lester J Layfield

  • 1Department of Pathology, University of Utah School of Medicine and ARUP Laboratories, 50 N Medical Drive, Salt Lake City, UT 84132, USA.

Applied Immunohistochemistry & Molecular Morphology : AIMM
|June 1, 2007
PubMed

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Fluorescence in situ hybridization, or FISH, was developed in the early 1980s and has quickly become one of the most widely used techniques in cytogenetics. Labeled probes are used to bind complementary DNA or RNA sequences on a chromosome or in a region within a cell. Earlier, the probes could only be obtained by cloning or reverse transcription of a DNA template. Currently, the probe oligonucleotides can be synthesized synthetically. Additionally, with the advancement of optical techniques,...
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In situ hybridization (ISH) is a technique used to detect and localize specific DNA or RNA molecules in cells, tissue, or tissue sections using a labeled probe. The technique was first used in 1969 for the investigation of nucleic acids. It is currently an essential tool in scientific research and clinical settings, especially for diagnostic purposes.
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A probe is a complementary strand of DNA or RNA that binds to corresponding nucleotide sequences in a cell. Many...