Egfp Identification
Egfp Identification - Related Videos
10:54
Reliable Identification of Living Dopaminergic Neurons in Midbrain Cultures Using RNA Sequencing and TH-promoter-driven eGFP Expression
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Cited by 9 •
2017
In Parkinson's Disease (PD), Substantia Nigra (SNc) dopaminergic neurons degenerate, leading to motor dysfunction. Here we report a protocol for culturing ventral midbrain neurons from a mouse expressing eGFP driven by a Tyrosine Hydroxylase (TH) promoter sequence, harvesting individual fluorescent neurons from the cultures, and measuring their transcriptome using RNA-seq.
14:12
Rodent Identification II
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2015
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN Animal records must be accurately maintained to ensure that data collection is correct. Records range from maintaining information on cage cards to having a detailed database with all of the relevant information on each animal. The primary component of recordkeeping is the individual identification of research animals. There are a variety of methods suitable for identifying mice and rats. This...
11:43
Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy
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Cited by 37 •
2014
This paper provides a step by step guide to the fluctuation analysis technique k-Space Image Correlation Spectroscopy (kICS) for measuring diffusion coefficients of fluorescently labeled plasma membrane proteins in live mammalian cells.
10:03
Development of Leishmania Species Strains with Constitutive Expression of eGFP
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2023
Here, we describe the methodology used for generating L. panamensis and L. donovani strains expressing the gene for eGFP as a stable integrated transgene using the pLEXSY system. Transfected parasites were cloned by limiting dilution, and clones with the highest fluorescence intensity in both species were selected for further use in drug screening assays.
11:09
Rodent Identification I
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2015
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN A fundamental requirement of biomedical research is the proper identification of research animals. It is essential that the right animal is utilized for procedures and data collection. Laboratory mice and rats can be identified with the following permanent methods: ear tags, ear punch codes, microchip implantation, tail tattoos for adult mice, and toe tattoos for neonates. Temporary methods of...
FAQs
The key signal is the difference between excitation and emission: the EGFP chromophore absorbs excitation light and emits light at a longer wavelength. Detection systems capture this emitted green fluorescence, allowing investigators to recognize labeled cells or proteins. Signal intensity can also be measured, adding a quantitative dimension to visual identification.
Because the chromophore mediates light absorption and emission, it is central to the detectable signal rather than a merely structural feature of the reporter. Its optical behavior makes fluorescence-based identification possible and links the presence of an EGFP-labeled target to an observable readout in microscopy, flow cytometry, or related imaging approaches.
Fluorescence observation provides a direct optical readout, whereas molecular and biochemical analyses provide complementary confirmation of EGFP expression. Using these approaches together can distinguish simply detecting a green signal from verifying that expression occurred. This distinction matters when researchers need to connect an imaging result with gene expression or another biological interpretation.
Researchers can begin with fluorescence microscopy to locate green-fluorescent cells or proteins, or use flow cytometry to detect and measure fluorescence across cells. Related imaging methods offer additional ways to capture the signal. When optical evidence requires confirmation, molecular and biochemical analyses can be added to assess EGFP expression.
EGFP identification can provide an indicator of transfection efficiency by revealing which cells display reporter-associated fluorescence. Microscopy can show the presence and distribution of fluorescent cells, while fluorescence measurement can characterize signal intensity. These observations help researchers evaluate whether transfection produced detectable reporter expression and identify differences among biological samples.
Fluorescent labeling lets investigators follow where a protein is located within cells and observe protein trafficking as biological events unfold. In living-cell studies, imaging EGFP-associated fluorescence can connect spatial patterns with cell behavior over time. This application makes identification useful not only for confirming expression, but also for examining dynamic cellular processes.