Ultra-thin Sections
Ultra-thin Sections - Related Videos
01:50
Cross-Sectional Research
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2020
In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
08:53
Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
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Cited by 8 •
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The overall goal of this method is to determine the low-energy electronic structure of solids at ultra-low temperatures using Angle-Resolved Photoemission Spectroscopy with synchrotron radiation.
03:14
Vibratome Sectioning of Whole Murine Kidney: A Technique to Generate Thin Sections of Murine Kidney
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In this video, we demonstrate the vibratome sectioning of a whole mouse kidney to obtain thin slices. These sliced tissue sections can be stored at low temperatures until further downstream analysis.
07:51
Fabrication of Silica Ultra High Quality Factor Microresonators
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05:28
MALDI Sample Preparation: the Ultra Thin Layer Method
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Cited by 32 •
2007
This video demonstrates the preparation of an ultra-thin matrix/analyte layer for analyzing peptides and proteins by Matrix-Assisted Laser Desorption Ionization Mass Spectrometry (MALDI-MS).
FAQs
Reducing a specimen to the nanometer scale allows the imaging system to resolve fine structures that overlap or merge in thicker sections. This improved separation makes membranes, organelles, macromolecular assemblies, and other elements of tissue ultrastructure easier to distinguish. The result is a closer view of how cellular components are arranged rather than only their larger-scale organization.
Fixation and embedding prepare the biological specimen for precise sectioning while preserving its structural organization. These steps are essential because the specimen must remain sufficiently stable for a glass or diamond knife to produce consistent slices. Their contribution affects whether the resulting sections retain useful cellular detail for subsequent high-resolution examination.
Heavy-metal staining increases contrast in sections examined by transmission electron microscopy. Greater contrast helps distinguish adjacent cellular structures that may otherwise appear too similar for clear interpretation at high resolution. This step is particularly useful when the objective is to examine membranes, organelles, or macromolecular assemblies and relate their visible organization to tissue ultrastructure.
Conventional sections can show broader tissue and cellular patterns, whereas Ultra-thin Sections expose structural detail that remains indistinguishable at greater thicknesses. Their value lies in revealing fine membranes, organelles, and macromolecular assemblies rather than simply producing a smaller version of a routine section. This distinction makes them suited to ultrastructural questions requiring high-resolution observation.
The workflow begins by preserving the tissue through fixation, followed by embedding to prepare it for cutting. A glass or diamond knife then slices the embedded specimen into thin ribbons. When transmission electron microscopy is planned, heavy-metal staining can be applied to increase contrast. The prepared sections are then examined for cellular and tissue ultrastructure.
Glass and diamond knives provide the cutting edges required to produce highly refined sections from embedded biological specimens. Their use supports the formation of thin ribbons suitable for high-resolution imaging, with the choice of knife included as part of the ultramicrotomy procedure. Consistent section production is important for examining delicate structural relationships across cells and tissues.
Researchers use this approach when cellular organization must be examined beyond the resolving detail available from conventional sections. Applications include cell biology, pathology, and microbiology, where membranes, organelles, tissue ultrastructure, and disease-related changes may be important. The method can connect fine structural alterations with cellular function, providing a structural basis for interpreting biological observations.
In pathology and microbiology, these sections can reveal changes in tissue ultrastructure and the organization of cellular components at very high resolution. Such observations may include altered membranes, organelles, or other fine structural features associated with disease-related changes. The findings help researchers relate microscopic architecture to cellular function and compare structural organization across biological conditions.