Cryo Sectioning
Cryo Sectioning - Related Videos
05:25
Preparation of Mouse Retinal Cryo-sections for Immunohistochemistry
0 Views •
Cited by 13 •
2019
This report describes comprehensive methods for preparing frozen mouse retina sections for immunohistochemistry (IHC). Methods described include dissection of the ocular posterior cup, paraformaldehyde fixation, embedding in Optimal Cutting Temperature (OCT) media and tissue orientation, sectioning and immunostaining.
05:05
Preparation of High-Temperature Sample Grids for Cryo-EM
0 Views •
Cited by 4 •
2021
This paper provides a detailed protocol for preparing sample grids at temperatures as high as 70 °C, prior to plunge freezing for cryo-EM experiments.
09:53
Micropatterning Transmission Electron Microscopy Grids to Direct Cell Positioning within Whole-Cell Cryo-Electron Tomography Workflows
0 Views •
Cited by 29 •
2021
The goal of this protocol is to direct cell adhesion and growth to targeted areas of grids for cryo-electron microscopy. This is achieved by applying an anti-fouling layer that is ablated in user-specified patterns followed by deposition of extra-cellular matrix proteins in the patterned areas prior to cell seeding.
08:37
Visualization of Organelles In Situ by Cryo-STEM Tomography
0 Views •
Cited by 6 •
2023
Cryo-STEM tomography provides a means to visualize organelles of intact cells without embedding, sectioning, or other invasive preparations. The 3D resolution obtained is currently in the range of a few nanometers, with a field of view of several micrometers and an accessible thickness in the order of 1 µm.
08:12
Thin Sectioning of Slice Preparations for Immunohistochemistry
0 Views •
Cited by 8 •
2007
The present method allows reproducible cryostat sectioning of small, difficult-to-manage, tissue pieces, such as biopsies and brain slices. We utilize a simple aluminum freezing stage to facilitate handling of tissue and a standard cryostat to routinely produce 5-10 micron serial sections from 400 micron thick brain slices.
FAQs
Freezing gives tissue enough rigidity for cutting, while the embedding medium supports the specimen as the blade passes through it. Maintaining low temperature helps retain tissue structure during sectioning, and the resulting slices can preserve anatomical relationships needed for examining neural organization and molecular signals.
By cutting tissue into thin slices without losing the arrangement of neighboring regions, Cryo sectioning allows features to be interpreted in their original anatomical context. In brain and spinal cord samples, researchers can therefore relate neuronal organization, labeled cells, or protein signals to precise locations rather than examining those signals without spatial reference. This connection is central to studying neural structure and circuitry.
A sharp blade and controlled low temperature work together to produce usable slices from frozen tissue. The blade must cut through the specimen cleanly, while the cold environment maintains its frozen state. The embedding medium adds support during this step. These conditions help preserve morphology for subsequent staining and imaging.
After cutting, the slices can be mounted on slides for staining, immunohistochemistry, or imaging. Staining makes selected tissue features visible, whereas immunohistochemistry is used to examine molecular signals such as proteins. Imaging then records where these structural or labeled features occur. This workflow converts preserved sections into data about neural anatomy and molecular distribution.
Within neuroscience, the method supports analysis of brain and spinal cord structure, neuronal organization, and the distribution of proteins or labeled cells. Those readouts can be used to investigate neural circuits, disease-related changes, and responses to experimental treatments. Its value comes from examining these outcomes together with their locations, allowing cellular findings to be related to specific regions of nervous tissue.
Researchers can use the sections to connect a cellular feature with the neural region where it appears. For example, a labeled cell or protein signal can be examined alongside surrounding anatomy, helping reveal how molecular distributions relate to neuronal organization. This spatially resolved view supports investigations of circuit structure, disease-associated changes, and treatment responses in brain or spinal cord tissue.