Frozen Tissue Preparation
Frozen Tissue Preparation - Related Videos
02:37
Frozen Mouse Brain Tissue Sectioning: A Procedure to Obtain Thin Frozen Tissue Sections from Frozen Murine Brain Tissue
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2023
In this video, we demonstrate the sectioning of a frozen mouse brain tumor tissue using a cryostat. The frozen brain tissue sections so obtained are stored at low temperatures until further analysis.
04:23
Frozen Skin Tissue Block Preparation: A Protocol to Preserve Cutaneous Melanoma Samples from Murine Dorsal Skin
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2023
This video describes the detailed protocol for isolating melanoma-containing murine dorsal skin, followed by cryo-embedding to prepare a frozen skin tissue block. The cryo-embedded tissue block can be sectioned and microscopically examined to study melanoma progression.
11:39
Using Unfixed, Frozen Tissues to Study Natural Mucin Distribution
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Cited by 39 •
2012
Unfixed frozen tissue samples embedded in Optimal Cutting Temperature medium (OCT) can be used to study natural distribution and glycosylation of secreted mucus. In this approach tissue processing is minimal and the natural presentation of glycolipids, mucins and glycan-epitopes is preserved. Tissue sections can be analyzed by immunohistochemistry using fluorescence or chromogenic detection.
03:55
Obtaining a Single-Cell Suspension from Frozen Rat Brain Tissue
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2025
This video demonstrates the dissociation of frozen rat brain tissue into a single-cell suspension using enzymatic digestion and mechanical trituration. The prepared cells are fixed and permeabilized with ethanol for downstream applications like flow cytometry or gene expression analysis.
09:59
Preparation of Primary Neurons for Visualizing Neurites in a Frozen-hydrated State Using Cryo-Electron Tomography
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Cited by 24 •
2014
To preserve neuronal processes for ultrastructural analysis, we describe a protocol for plating of primary neurons on electron microscopy grids followed by flash freezing, yielding samples suspended in a layer of vitreous ice. These samples can be examined with a cryo-electron microscope to visualize structures at the nanometer scale.
FAQs
Rapid freezing helps preserve both cellular architecture and biochemical components before later analysis. This is important because structural degradation could interfere with microscopic examination or molecular detection. By stabilizing the specimen early, the method supports more reliable assessment of neurons, glial cells, protein distribution, and gene expression in brain tissue.
The supporting medium helps hold the specimen in a form suitable for sectioning, while the cryostat produces thin slices under controlled low-temperature conditions. Together, these components allow researchers to obtain sections that retain tissue organization and can be processed for staining, immunohistochemistry, in situ hybridization, or fluorescence imaging.
Controlled low-temperature conditions help maintain the preserved state of the specimen while it is sectioned. This supports consistent preparation of thin slices for downstream microscopic and molecular methods. Maintaining that condition is especially relevant when the analysis depends on recognizable cellular structure or on biochemical components that must remain available for detection.
A typical workflow preserves the specimen by rapid freezing, places it in a supporting medium, and uses a cryostat to produce thin sections at controlled low temperature. The resulting slices are then prepared for a selected analysis, such as staining, immunohistochemistry, in situ hybridization, or fluorescence imaging.
The sections can support several complementary readouts. Histological staining helps examine tissue structure, immunohistochemistry can assess protein distribution, and in situ hybridization can examine gene expression. Fluorescence imaging provides another way to visualize labeled features. Selecting among these approaches depends on whether the study focuses on anatomy, proteins, or gene activity.
This approach is useful for investigating brain anatomy, neural development, disease-associated changes, and responses to experimental conditions. Its value comes from preserving specimens for both structural and molecular analyses, allowing investigators to examine neurons and glial cells alongside protein distribution or gene expression within neural tissue.