Virus Reduction Technique
Virus Reduction Technique - Related Videos
20:47
A Technique to Simultaneously Visualize Virus-Specific CD8+ T Cells and Virus-Infected Cells In situ
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Cited by 10 •
2009
A technique combining in situ tetramer staining and in situ hybridization (ISTH) enables visualization, mapping and analysis of the spatial proximity of virus-specific CD8+ T cells to their virus-infected targets, and determination of the quantitative relationships between these immune effectors and targets to infection outcomes.
03:09
A Technique for the Generation of Influenza Virus-Like Particles via a Mammalian System
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2025
This video demonstrates the generation of influenza virus-like particles (VLPs) in a mammalian system. Upon expressing three eukaryotic expression vectors — encoding different viral structural proteins — in suitable mammalian host cells, the expressed viral proteins self-assemble into VLPs on the host plasma membrane and release via budding from the cell surface.
03:43
Virus Plaque Assay: A Technique to Measure Infectious Herpes Simplex Virus via Quantification of Plaques Formed in Monolayer of Virus-Infected Cells
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2025
This video describes the virus plaque assay of the infectious herpes simplex virus or HSV. The diluted viral particles are inoculated to the monolayer of epithelial cells. Upon incubation, the virus forms plaques and is counted visually to determine the infectious virus titer.
03:11
Oxidation-Reduction Reactions
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2020
Oxidation–Reduction Reactions Earth’s atmosphere contains about 20% molecular oxygen, O2, a chemically reactive gas that plays an essential role in the metabolism of aerobic organisms and in many environmental processes that shape the world. The term oxidation was originally used to describe chemical reactions involving O2, but its meaning has evolved to refer to a broad and important reaction class known as oxidation–reduction (redox) reactions. Some redox reactions involve the transfer of...
01:23
A Gold Staining Technique to Visualize Myelin Reduction in Stressed Mice
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2025
Stress impairs oligodendrocyte function, disrupting the lipid-rich myelin sheath surrounding neuronal axons in the medial prefrontal cortex, a brain region regulating emotion.
FAQs
Physical removal separates virus particles from a biological material, whereas inactivation reduces infectivity by damaging or disabling viral components. The choice depends on viral and product properties, including particle size, envelope stability, and heat sensitivity. Distinguishing these mechanisms helps researchers interpret whether a process removes contamination, prevents replication, or achieves both outcomes.
Sequential steps can target different viral properties rather than relying on one mechanism. For example, one stage may remove particles while another addresses viruses that remain infectious because of their stability under the first condition. Evaluating the combined reduction supports process validation and provides stronger evidence for infectious-risk control in biological materials and manufactured products.
Particle size, envelope stability, and heat sensitivity can determine how well a virus responds to a particular reduction approach. Viruses with different characteristics may therefore show different levels of reduction under the same conditions. Measuring performance across relevant virus types is important for identifying limitations and confirming that a process addresses the intended contamination risks.
A general evaluation begins by identifying the biological material, the relevant virus types, and the properties that a proposed step can target. The material then undergoes the selected removal, inactivation, or sequential process, followed by measurement of the remaining viral contamination or infectivity. Comparing results across virus types supports validation and infectious-risk assessment.
These techniques are applied when manufacturers need to improve the safety of products that may contain viral contamination. Physical removal, inactivation, or combined processing can be assessed as part of infectious-risk control. Measuring reduction for relevant viruses helps determine whether the manufacturing process provides consistent protection while preserving the intended use of the biologic product.
In laboratory studies, reduction approaches help protect cell cultures and other biological samples from unwanted viral contamination. They also support investigations of viral persistence by limiting infectious material when appropriate and by enabling researchers to compare how different viruses respond to processing. These uses connect contamination control with experimental reliability and infection-focused analysis.