Viral Culture
Viral Culture - Related Videos
02:54
Crystal Violet Staining for Estimating Viral Infectious Titer in Cell Cultures
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2026
Source: Frias-De-Diego and A., Crisci, E. Use of Crystal Violet to Improve Visual Cytopathic Effect-based Reading for Viral Titration using TCID50 Assays. J. Vis. Exp., (2022)This video demonstrates a crystal violet staining method to visualize cytopathic effects in virus-infected cell cultures. The pattern of stained and unstained wells across serial dilutions enables rapid, cost-effective estimation of the viral infectious dose.
03:17
Viral Growth in Human Nasal Epithelial Cells Cultured at an Air-Liquid Interface
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2026
Source: Otter, C. J., et al. Infection of Primary Nasal Epithelial Cells Grown at an Air-Liquid Interface to Characterize Human Coronavirus-Host Interactions. J. Vis. Exp. (2023)This video demonstrates the growth of coronavirus in human nasal epithelial cells cultured at an air-liquid interface, mimicking infection and viral replication in the human nasal cavity.
05:22
Ex vivo Culture of Human Placental Explants for the Study of Viral Transmission Across the Maternal-Fetal Interface
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2025
This protocol describes the preparation of human placental tissue explants cultured at an air-liquid interface for the study of viral infections.
00:57
Viral Recombination
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2019
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment. Viral Recombination Can Create New Diseases Some diseases can infect multiple species. For example, pigs can be infected by some human and...
03:17
Preparation and Induction of Borrelia burgdorferi Cultures for Viral Particle Production
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2025
Source: Eggers, C. H. Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi. J. Vis. Exp. (2022)This video demonstrates the preparation of a genetically modified Borrelia burgdorferi culture engineered with dormant bacteriophage DNA carrying an antibiotic resistance gene. Following antibiotic selection and incubation, a chemical inducer triggers DNA damage, leading to excision, replication, and assembly of new virions containing the resistance gene. After a...
FAQs
Successful cultivation requires a host system that supports the relevant stages of the viral life cycle. In permissive cells, the virus can enter, replicate its genome, assemble new particles, and release viral material. Embryonated eggs and experimental animals provide alternative living systems when cell cultures are not the selected model, allowing investigators to study viral growth in different biological contexts.
After inoculation, viral entry may be followed by genome replication, assembly of new virus, and release from the host cells. These events can produce visible cytopathic effects, meaning observable changes in infected cells, or measurable viral material. Tracking these outcomes connects the culture result to specific stages of viral replication rather than treating growth as an unexplained signal.
These systems represent different living environments in which viruses may be cultivated and studied. Susceptible cell cultures provide a cellular setting, while embryonated eggs and experimental animals provide other host systems. Using more than one type of system can support investigations of viral behavior, host range, and disease mechanisms when the biological question extends beyond a single culture model.
The sequence of entry, genome replication, assembly, and release determines whether a culture produces detectable evidence of viral activity. Each stage contributes to the generation or movement of viral material within the host system. Observing cytopathic effects or measuring viral material therefore helps researchers relate the final result to the underlying progression of infection.
A general workflow begins by introducing a sample into a selected susceptible host system, such as permissive cells, an embryonated egg, or an experimental animal. The system is then examined for cytopathic effects or measurable viral material. These observations provide evidence that viral activity occurred and create material for subsequent study of the virus.
In diagnostic work, cultivation provides a way to examine whether a sample produces viral activity in a susceptible host system. Investigators can assess resulting cytopathic effects or measurable viral material as evidence relevant to confirmation. This approach links a diagnostic finding to biological behavior in the laboratory, rather than relying only on an initial sample observation.
Cultivated virus provides a laboratory system for studying viral growth and behavior during development of vaccines and antiviral approaches. Researchers can examine viral material produced in host systems while investigating how the virus behaves under experimental conditions. This makes culture relevant to testing and developing interventions aimed at preventing or limiting viral disease.
Comparing viral activity across susceptible cells, embryonated eggs, or experimental animals can reveal how the virus interacts with different host systems. Evidence from entry, replication, assembly, release, cytopathic effects, or measurable viral material helps connect host compatibility with disease-related behavior. Consequently, cultivation supports pathogen characterization and investigation of how viruses produce disease.