Bacterial Swab Technique
Bacterial Swab Technique - Related Videos
04:45
Swab-based Conjunctival Commensal Bacteria Isolation: A Technique to Isolate Commensal Bacteria from Conjunctiva of Murine Model
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2025
This video describes a swab-based technique to isolate viable commensal bacteria from the ocular conjunctiva. The technique can be used to profile the commensal bacterial microbiome of the conjunctiva, which plays a defensive role against pathogens.
02:34
Quantification of Group B Streptococcus Load in the Mouse Vaginal Lumen via Swabbing and Chromogenic Culture
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2026
Source: Patras, K. A. & Doran, K. S. A Murine Model of Group B Streptococcus Vaginal Colonization. J. Vis. Exp. (2016)This video demonstrates the quantification of vaginal Group B Streptococcus (GBS) load in a mouse model using swabbing and chromogenic culture. It outlines the steps involved in sample collection, plating, and colony counting to quantify GBS load in the mouse vaginal lumen.
10:03
Swab Sampling Method for the Detection of Human Norovirus on Surfaces
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Cited by 40 •
2017
A macrofoam based sampling methodology was developed and evaluated for the detection and quantification of norovirus on environmental hard surfaces.
03:09
A Technique to Prepare a Monoclonal Bacterial Culture
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2025
Source: Lin, P., et al. Synthesizing Sodium Tungstate and Sodium Molybdate Microcapsules via Bacterial Mineral Excretion. J. Vis. Exp. (2018).This video demonstrates the preparation of a monoclonal bacterial culture for mineral production through serial dilution and colony isolation on an agar plate. By shaking the plate with glass beads, individual cells are spatially separated to form genetically uniform colonies, which are then transferred to liquid media for growth. The culture with the...
03:54
A Technique to Establish a Bacterial Infection Model in Insect Larvae
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2025
This video demonstrates a method to establish a Mycobacterium bovis infection model in the larvae of the greater wax moth, Galleria mellonella. A bioluminescent strain of Mycobacterium bovis BCG is injected into the hemolymph of the larva to establish infection, and the bioluminescence is measured at predefined intervals to study the progress of infection.
FAQs
Rotation increases contact between the swab and the sampled surface, allowing it to lift microorganisms and cellular material from the target area. Restricting collection to a defined body surface, wound, or environmental site helps associate the recovered material with a specific location. This consistency supports more reliable laboratory analysis and comparison between samples.
After sampling, the swab must be handled in a way that matches the intended laboratory analysis. It may be placed in appropriate transport medium or applied directly to culture media, where organisms can be recovered and characterized under controlled conditions. This choice determines how the collected material proceeds into laboratory processing without changing the sampled site.
Aseptic handling helps preserve the integrity of the collected specimen, while accurate documentation identifies exactly where the sample originated. Together, these practices make laboratory findings easier to interpret in relation to a body surface, wound, or environmental location. Consistent collection and recordkeeping therefore improve result reliability and strengthen comparisons among samples.
Swabbing provides material that can be analyzed for bacterial presence at a defined site, supporting assessment of whether colonization or infection is present. In immunology and infection research, those findings can be considered alongside the sampled location and laboratory characterization of recovered organisms. The technique therefore connects microbial detection with investigations of host responses to infection.
The workflow begins by selecting and documenting the target site, then using a sterile swab to sample the area with rotation. The collected swab is transferred to appropriate transport medium or applied to culture media. Under controlled laboratory conditions, organisms can then be recovered and characterized, providing material for downstream infection-related analysis.
Researchers should standardize the sampled site, use of sterile equipment, swab rotation, post-collection handling, and site documentation. These elements influence whether the specimen accurately represents the intended location and whether results can be compared across samples. Consistency is especially important when evaluating bacterial recovery or relating findings to host inflammatory responses.
Collected specimens can support bacterial recovery and characterization, including antimicrobial susceptibility testing. The resulting information helps investigators examine how recovered organisms relate to infection studies and treatment response. In immunology and infection research, swab material also contributes to studies of host inflammatory responses, linking microbial sampling with analysis of the biological reaction at the site.