Fluorescent Tracking
Fluorescent Tracking - Related Videos
08:39
Tracking Single Proteins in Lipid Bilayers Using Fluorescence Microscopy
0 Views •
2025
This article provides a detailed description of how to create samples for single-protein tracking in solid-supported lipid bilayers. It also explains a straightforward fluorescence microscope with single-molecule sensitivity and a fast frame rate. Finally, we outline the procedure for extracting single-protein trajectories.
03:49
A Luciferase-Fluorescent Reporter Influenza Virus to Track Viral Infections
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2025
This video demonstrates a method to track viral infections in mouse models using a recombinant luciferase and fluorescence protein-expressing bi-reporter Influenza A virus. This method enables both in vivo and ex vivo studies, enabling researchers to gain insights into viral dynamics and the effects of interventions.
11:34
Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
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Cited by 5 •
2016
Non-stirred precipitation polymerization provides a rapid, reproducible prototyping approach to the synthesis of stimuli-sensitive poly(N-isopropylacrylamide) microgels of narrow size distribution. In this protocol synthesis, light scattering characterization and single particle fluorescence tracking of these microgels in a wide-field microscopy setup are demonstrated.
11:28
3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
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Cited by 10 •
2014
In this video protocol we track - at high speed and in three dimensions - fluorescently labeled lysosomes within living cells, using the orbital tracking method in a modified two-photon microscope.
05:49
Tracking Microbial Contamination in Retail Environments Using Fluorescent Powder - A Retail Delicatessen Environment Example
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Cited by 11 •
2014
The overall goal of this study was to demonstrate the potential cross contamination mechanism of foodborne pathogen Listeria monocytogenes in a retail deli setting. This methodology may be applied to a variety of different environments to track pathogen contamination.
FAQs
Spatial redistribution of fluorescence can indicate that labeled cells or agents have migrated, whereas increased signal within a cell may reflect uptake or replication. Colocalized fluorescence can provide evidence of cell-cell contact. Interpreting these patterns requires examining signal intensity and location under defined conditions rather than treating every change in brightness as movement.
Microscopy preserves spatial information, making it useful for examining immune-cell trafficking, pathogen invasion, and cell-cell contact within a visual field. Flow cytometry instead measures fluorescence across analyzed cells or particles, supporting assessment of antigen-specific responses and signal changes in larger cell populations. The choice depends on whether location or population-level measurement is the primary outcome.
Attaching a fluorescent marker provides a way to follow a selected cell, molecule, or infectious agent, while expressing a marker allows fluorescence to be associated with the tracked biological system through marker production. These approaches support observation of location, movement, interactions, or changes in signal, depending on the experimental question and the system being studied.
Fluorescence intensity and spatial distribution connect observable patterns with underlying biological events. Signal location may show where immune cells or infectious agents are positioned, while intensity changes can accompany uptake, replication, or antigen-specific responses. Comparing these measurements across defined conditions can reveal how treatments alter interactions between host cells and pathogens.
A typical workflow begins by attaching or expressing a fluorescent marker in the cells, molecules, or infectious agents of interest. Researchers then examine the prepared system with microscopy or flow cytometry, record signal location or intensity, and compare results under defined conditions. This workflow links visual or quantitative fluorescence measurements to migration, uptake, replication, or contact.
Fluorescent tracking can show whether a treatment changes host-pathogen behavior by comparing fluorescence patterns or intensities between defined experimental conditions. In vaccine studies, it can help assess antigen-specific responses or immune-cell trafficking. For antimicrobial strategies, changes in invasion, replication, uptake, or cell-cell interactions can provide measurable evidence of altered infection dynamics.