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Related Concept Videos

Labeling DNA Probes03:31

Labeling DNA Probes

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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
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Related Experiment Video

Updated: Feb 28, 2026

Optical Screening of Novel Bacteria-specific Probes on Ex Vivo Human Lung Tissue by Confocal Laser Endomicroscopy
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Light Emitting Marker for Robust Vision-Based On-The-Spot Bacterial Growth Detection.

Kyukwang Kim1, Jieum Hyun2, Jessie S Jeon3

  • 1Urban Robotics Laboratory, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Korea. kkim0214@kaist.ac.kr.

Sensors (Basel, Switzerland)
|June 22, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a novel LED marker system for bacterial growth detection, improving upon existing methods. The new approach offers more reliable measurements in challenging conditions, enhancing automated bacterial monitoring.

Keywords:
LED markerbacterial growthfast Fourier transformationlight emitting markerrobust growth detection

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Area of Science:

  • Microbiology and Biotechnology
  • Biomedical Engineering
  • Optical Sensing Technologies

Background:

  • Traditional bacterial growth measurement relies on optical density, which can be limited by sample turbidity and ambient light.
  • Existing marker-based methods using Fast Fourier Transformation (FFT) are susceptible to image processing interferences from lighting and broth color.

Purpose of the Study:

  • To develop a more robust and automated method for detecting bacterial growth levels.
  • To overcome the limitations of current marker-based FFT methods, particularly in variable lighting and colored media.

Main Methods:

  • A modified marker-FFT method utilizing a light-emitting diode (LED) array as a self-illuminating marker.
  • The LED marker serves as a region of interest (ROI) indicator, simplifying image processing.
  • The system allows measurements independent of external light sources and in darkly colored broths.

Main Results:

  • The proposed LED marker system demonstrates potential for more reliable bacterial growth detection.
  • It mitigates issues caused by ambient light and broth coloration, which affect conventional methods.
  • The integrated ROI function enhances the automation and accuracy of the detection process.

Conclusions:

  • The LED marker-FFT system offers a significant advancement for robust bacterial growth monitoring.
  • This method provides a more stable alternative to optical density and conventional marker-based approaches.
  • The system is expected to improve the reliability of automated bacterial detection in diverse laboratory settings.