Osmium Tetroxide Staining
Osmium Tetroxide Staining - Related Videos
08:22
Utilization of Capsules for Negative Staining of Viral Samples within Biocontainment
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Cited by 3 •
2017
This protocol provides instruction for negative staining virus samples which can easily be used in BSL-2, -3, or -4 laboratories. It includes the use of an innovative processing capsule, which protects the transmission electron microscopy grid and provides the user easier handling in the more turbulent environments within biocontainment.
02:50
Toluidine Blue Staining of Peripheral Nerve Sections: A Technique to Stain Myelinated Nerve Fibers For Peripheral Nerve Structure Visualization
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2025
This video demonstrates the staining technique of resin-embedded, osmium tetroxide-treated rat peripheral nerve sections using toluidine blue. The stained nerve sections help visualize the fine structures of peripheral nerves.
02:44
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
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2025
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry. Syn Dihydroxylation Mechanism The reaction comprises a two-step mechanism. It begins with the addition of osmium tetroxide across the alkene double bond in a concerted manner forming a...
11:33
Microscopy and Staining: Gram, Capsule, and Endospore Staining
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2023
Source: Rhiannon M. LeVeque1, Natalia Martin1, Andrew J. Van Alst1, and Victor J. DiRita1 1 Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, United States of America Bacteria are diverse microorganisms found nearly everywhere on Earth. Many properties help distinguish them from each other, including but not limited to Gram-staining type, shape and arrangement, production of capsule, and formation of spores. To observe these properties, one...
03:12
May-Grunwald Giemsa Staining: A Method to Stain Bone Marrow Cells
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2023
This video describes the technique of staining bone marrow cells using May- Grünwald Giemsa Staining. In the protocol, we will stain the murine myeloid leukemia cells, C149 cells, to analyze the morphology and differential counting.
FAQs
The reagent reacts with unsaturated lipids and is reduced to a dark, electron-dense compound within the tissue. This chemical change both marks lipid-rich structures and stabilizes membrane architecture, allowing myelin and neural membranes to stand out from surrounding material. The resulting signal is especially useful when researchers need structural detail rather than only general tissue morphology.
Lipid-rich structures accumulate the reaction product, so myelin receives strong contrast relative to less lipid-dense tissue. This selectivity helps researchers examine the organization of myelin around axons and identify structural differences in neural tissue. Because membrane architecture is stabilized during the reaction, the preparation can preserve features relevant to assessing axonal organization and myelination.
The dark, electron-dense product provides a strong structural signal that can be detected with both light and electron microscopy. In light microscopy, it supports visualization of stained tissue patterns, while in electron microscopy it contributes to contrast at the membrane level. This makes the method useful across scales, from broader myelin organization to membrane ultrastructure.
Researchers can evaluate myelination, axonal organization, neural membranes, and membrane ultrastructure. These features provide complementary information: myelin patterns indicate insulation-related organization, axonal arrangement shows structural alignment, and membrane detail reveals fine architectural changes. Examining these components together can clarify how nervous tissue is organized and how that organization changes under experimental conditions.
The approach is useful when a study requires visualization of lipid-rich neural structures during development, connectivity studies, injury analysis, or disease research. Its strong contrast can reveal alterations that routine stains may not show clearly. Researchers can therefore use the resulting sections to compare structural organization across experimental groups or across different stages of neural change.
Changes in myelin, axonal organization, and membrane structure can serve as visible indicators of tissue alteration after injury or during degeneration. Osmium Tetroxide Staining supports this analysis by producing pronounced contrast in those lipid-associated features. Comparing stained nervous tissue allows researchers to characterize structural disruption and relate it to broader questions about neural disease or damage.