Immunohistochemistry Detection
Immunohistochemistry Detection - Related Videos
04:34
An Immunohistochemistry Staining for the Detection of Rabies Virus Antigens
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2025
This video demonstrates immunohistochemistry staining for rabies virus antigen detection in infected mouse brain tissue. The process includes deparaffinization and alcohol treatment, followed by proteolytic treatment to enhance antigen accessibility. Immunohistochemistry staining reveals red precipitates, confirming the presence of rabies antigens in the tissue section.
06:38
Detection of Abnormal Prion Protein by Immunohistochemistry
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2023
Immunolabeling abnormal prion protein using immunohistochemistry protocols requires specific sample and anti-PrP antibody preparation methodologies. The present protocol describes the key steps in epitope demasking to ensure proper PrP immunolabeling and to minimize non-specific background staining. Also, this approach considers biosafety measures when conducting immunohistochemistry studies with the prion-infected tissues.
07:13
Detection of Modified Forms of Cytosine Using Sensitive Immunohistochemistry
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Cited by 8 •
2016
Herein we describe a sensitive immunochemical method for mapping the spatial distribution of 5mC oxidation derivatives based on the use of peroxidase-conjugated secondary antibodies and tyramide signal amplification.
04:37
Detecting Abnormal Prion Proteins in Brain Tissue Using Immunohistochemistry
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2025
This video demonstrates a technique to detect misfolded prion protein in brain sections using immunohistochemistry. Upon treating the brain section with formic acid to denature prions and minimize infection risk, as well as unmasking the prion aggregates using heat-induced epitope retrieval, the sections are immunolabeled for the misfolded prion protein aggregates and observed under a microscope.
08:42
Immunohistochemistry Test for the Lyssavirus Antigen Detection from Formalin-Fixed Tissues
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Cited by 1 •
2021
Here, we present an immunohistochemistry test protocol for the detection of rabies virus antigen as an alternative diagnostic test for formalin-fixed tissues.
FAQs
Specificity comes from the primary antibody, which binds the selected antigen in the tissue. A secondary antibody can then bind the primary antibody and carry the detectable label, while a directly labeled primary antibody combines recognition and detection in one reagent. This choice determines how the antibody system is organized for visualizing the target.
Enzyme-based detection produces a colored precipitate at the antigen site, whereas fluorophore-based detection produces a fluorescent signal observed by microscopy. Both approaches reveal antigen distribution, but they generate different visual readouts. Selecting between them allows investigators to match the detection signal to the way they need to examine protein localization in tissue sections.
Localization links a detected molecule to specific tissue regions, cell types, or structural features rather than reporting only its presence in the sample. Signal intensity can support comparisons of protein expression between samples when staining conditions are standardized. Interpretation therefore depends on considering both where the signal appears and how consistently its strength differs across tissues.
A basic workflow starts with preserved tissue sections, followed by exposure to a primary antibody that recognizes the target antigen. Detection then uses either a labeled secondary antibody or a directly labeled primary antibody. The resulting enzyme-generated color or fluorophore signal is examined by microscopy, allowing antigen distribution to be related to tissue architecture.
Controls and standardized staining conditions provide a basis for deciding whether observed signals reflect the target antigen rather than variation between samples or procedures. They are especially important when comparing signal intensity across tissues. Without this consistency, differences in staining may be difficult to interpret as biological changes in protein expression or distribution.
The method is useful when researchers need to connect molecular identity with the organization of a tissue. It can support investigations of cell types, disease-associated changes, developmental patterns, and protein expression. Because signals remain associated with tissue location, findings can show both which molecules are present and how their distribution relates to biological structure.