Gel Surface Mounting
Gel Surface Mounting - Related Videos
06:41
Light Sheet Fluorescence Microscopy of Plant Roots Growing on the Surface of a Gel
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Cited by 25 •
2017
This protocol shows a plant sample preparation method for light-sheet microscopy. The setup is characterized by mounting the plant vertically on the surface of a gel and letting it grow in controlled bright conditions. This allows long-term observation of plant organ development in standardized conditions.
06:30
Gel Purification
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2023
Gel purification is used to recover DNA fragments after electrophoretic separation. DNA recovery from an agarose gel includes three basic steps: binding, washing and eluting from a silica column. DNA is believed to bind to silica in the presence of high salt via a salt bridge. Following binding, DNA is washed of impurities and eluted under low salt conditions disrupting this interaction. This video goes through a step-by-step, generalized procedure for cutting out a band from the gel, gel...
09:22
DNA Gel Electrophoresis
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2023
DNA gel electrophoresis is a technique used for the detection and separation of DNA molecules. An electric field is applied to a gel matrix comprised of agarose, and within the gel, charge particles will migrate and separate based on size. The negatively charged phosphates of the DNA backbone cause DNA fragments to move toward the anode - a positively charged electrode. The video explains the mechanism by which DNA fragments are resolved on an agarose gel, and it provides a step-by-step...
10:55
Staining Proteins in Gels
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Cited by 7 •
2008
Following separation by electrophoretic methods, proteins in a gel can be detected by several staining methods. Staining of proteins with Coomassie Blue, Silver Staining, SYPRO Orange, SYPRO Ruby are demonstrated in this video.
07:31
Two-Dimensional Gel Electrophoresis
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2023
Two-dimensional gel electrophoresis (2DGE) is a technique that can resolve thousands of biomolecules from a mixture. This technique involves two distinct separation methods that have been coupled together: isoelectric focusing (IEF) and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). This physically separates compounds across two axes of a gel by their isoelectric points (an electrochemical property) and their molecular weights. The procedure in this video covers the main...
FAQs
The gel creates a level support that helps limit specimen movement while keeping the sample accessible from above. Its hydrated environment also helps maintain conditions in which the specimen can retain its shape during observation. Together, these properties reduce shifting and make it easier to maintain focus on cellular or tissue features throughout microscopy.
Surface positioning allows researchers to examine a specimen without relying on sectioning to expose its features. This is particularly useful when a sample is fragile or when cutting could interfere with its shape or spatial arrangement. Keeping the specimen at the gel interface supports direct observation of accessible morphology and organization.
Gel surface mounting can be examined with either transmitted or reflected light microscopy, depending on how the specimen presents features for observation. These imaging modes provide ways to inspect cellular or tissue characteristics while the sample remains supported at the gel surface. The approach therefore accommodates observation of specimens whose useful features are accessible from the interface.
Fragility, difficulty with sectioning, and the need to observe an interface all favor this preparation strategy. A sample that moves easily can benefit from the gel’s stabilizing support, while a delicate specimen can remain in a more accessible configuration for imaging. These conditions help researchers examine shape and spatial relationships with less disruption.
At a basic level, the researcher places the biological sample on the gel surface, positions it for stable and accessible viewing, and examines it under a microscope. The gel should provide a level, hydrated support while the specimen remains suitably exposed for imaging. Observation may then use transmitted or reflected light, according to the viewing arrangement.
This preparation supports studies of morphology, development, behavior, and spatial organization. It is useful when researchers need to follow cellular or tissue features while preserving the sample’s accessible arrangement at an interface. By improving stability and focus, the method can make structural relationships and observable changes easier to examine during microscopy.