Scale Bar Implementation
Scale Bar Implementation - Related Videos
13:14
Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications
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Cited by 4 •
2015
Since the discovery of the green fluorescent protein gene, fluorescent proteins have impacted molecular cell biology. This protocol describes how expression of distinct fluorescent proteins through genetic engineering is used for barcoding individual cells. The procedure enables tracking distinct populations in a cell mixture, which is ideal for multiplexed applications.
12:59
BEST: Barcode Enabled Sequencing of Tetrads
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Cited by 4 •
2014
Barcode Enabled Sequencing of Tetrads (BEST) replaces the manual processes of isolating, disrupting and spacing tetrads. BEST isolates tetrads by fluorescence-activated cell sorting onto agar plates, separates the spores by agitation with glass beads, and determines which randomly arrayed colonies were derived from the same original tetrad using molecular barcodes.
11:59
Competitive Genomic Screens of Barcoded Yeast Libraries
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Cited by 44 •
2011
We have developed comprehensive, unbiased genome-wide screens to understand gene-drug and gene-environment interactions. Methods for screening these mutant collections are presented.
08:55
Application of DNA Barcoding to Identify Medicinal Plants
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Cited by 2 •
2024
The present protocol describes the use of DNA barcoding technology to authenticate plant-based medicinal materials, and the medicinal plant Angelica sinensis (Oliv.) Diels was identified as an example.
05:42
A Barcoding Assay for Phenotypic and Functional Characterization of Immune Cells
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2025
This video highlights a single-cell proteomic method that employs heavy-metal-conjugated antibodies for distinct cell barcoding. Subsequently, immunostaining and mass cytometry are applied to evaluate immune phenotypic and functional alterations in human whole blood-derived immune cells.
FAQs
Accuracy depends on a correct conversion between image pixels and physical units. That conversion may be based on microscope magnification, camera calibration, or spatial resolution. If the underlying calibration is incorrect, the displayed bar can give misleading size estimates even when its numerical label appears precise, limiting reliable interpretation of cells, tissues, biomaterials, or engineered features.
These provide alternative sources for linking image dimensions to real-world measurements. Magnification describes the imaging setup, camera calibration relates recorded pixels to physical distance, and spatial resolution indicates the scale represented in the image. Scale Bar Implementation uses the available relationship to assign a physical length to the graphical reference rather than relying on visual appearance alone.
Cropping changes the visible field without necessarily changing the size of image features, while resizing changes how many display pixels represent those features. The scale bar must preserve the same relationship between its displayed length and the structures shown. Otherwise, viewers may infer incorrect dimensions and make invalid comparisons across microscopy images or engineered designs.
A calibrated bar gives viewers a consistent physical reference for judging dimensions, morphology, and fabrication features. This makes it easier to compare structures shown at different image sizes or from different bioengineering contexts, including cell cultures, tissue constructs, biomaterials, and microfluidic systems. The comparison remains meaningful because observations are tied to real-world units rather than display size.
First, establish the relationship between pixels and physical units using microscope magnification, camera calibration, or spatial resolution. Next, use that relationship to select a known physical length and display it graphically with an appropriate label. Finally, check that the bar remains accurate in the final cropped or resized image, since later changes can alter its visual relationship to the image.
It is particularly useful when images document cell cultures, tissue constructs, biomaterials, or microfluidic systems. In these settings, researchers may need to interpret structure size, morphology, fabrication features, or experimental outcomes. A calibrated reference supports comparisons among samples and helps distinguish genuine differences in physical dimensions from differences caused only by image presentation.
It allows viewers to estimate the physical dimensions of biological structures, material features, and engineered devices directly from the image. In bioengineering, that context can support interpretation of morphology, assessment of fabrication features, and comparison of experimental outcomes. The bar does not replace the image, but it connects visible patterns to measurable spatial scale.