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Updated: May 17, 2026

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In Situ Hybridization for the Precise Localization of Transcripts in Plants
Published on: November 23, 2011
In situ hybridization histochemistry
1University Hospital, Lund, Sweden.
Current Protocols in Toxicology
|October 10, 2012
Abstract:
This unit describes two methods of in situ hybridization: one uses an ³⁵S-labeled oligonucleotide probe and the other uses a digoxigenin-labeled oligonucleotide probe on frozen, cryostat-sectioned samples. These methods allow detection of the physical distribution and expression levels of target mRNA. Protocols are also included for labeling the probes and preparing the sample material.
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A probe is a complementary strand of DNA or RNA that binds to corresponding nucleotide sequences in a cell. Many...
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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,...
Immunocytochemistry and Immunohistochemistry
Immunocytochemistry (ICC) and immunohistochemistry (IHC) are techniques that use antibodies to check for specific proteins or antigens in a sample. The technique was first published by Albert Coons in 1941 to detect the presence of pneumococcal antigen in tissue sections from mice infected with Pneumococcus. Immunocytochemistry helps localization of proteins or antigens in individual cells like blood cells, stem cells, etc., while immunohistochemistry does the same for tissue samples.
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