Related Experiment Video
Updated: May 30, 2026
09:24
High-Resolution Quantitative Immunogold Analysis of Membrane Receptors at Retinal Ribbon Synapses
Published on: February 18, 2016
Recognition of immunogold markers in electron micrographs
Ruixuan Wang1, Himanshu Pokhariya, Stephen J McKenna
1School of Computing, University of Dundee, Dundee DD1 4HN, UK.
Journal of Structural Biology
|July 30, 2011
Summary
This study introduces an automated method for detecting and counting immunogold markers in immunoelectron microscopy images. This advancement enables faster and more comprehensive quantitative analysis of cellular ultrastructure.
Area of Science:
- Cell Biology
- Microscopy
- Biotechnology
Background:
- Immunoelectron microscopy visualizes intracellular macromolecules at the ultrastructural level.
- Immunogold markers (colloidal gold particles) are used to localize molecules on ultrathin sections.
- Quantitative analysis of these markers is often manual or interactive.
Purpose of the Study:
- To develop an automated method for detecting and counting immunogold markers.
- To estimate the location, size, and type of each marker automatically.
- To facilitate rapid and comprehensive quantitative analysis of immunoelectron micrographs.
Main Methods:
- Development of an algorithm for automatic detection and counting of immunogold markers.
- Evaluation on single-labelled and double-labelled transmission electron micrographs.
- Analysis of markers of two different sizes.
Main Results:
- Successful automatic detection and counting of immunogold markers.
- Estimation of marker location, size, and type.
- Demonstrated effectiveness on images with single and double labeling.
Conclusions:
- The developed method represents a significant step towards automated analysis of immunoelectron micrographs.
- This automation enables more rapid and complete quantitative analysis than previously practicable.
- The technique has potential for advancing cell biological research through efficient ultrastructural analysis.
Related Concept Videos
01:20Immunogold Electron Microscopy
Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.
01:12Immunofluorescence Microscopy
A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
The...
The...