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Related Concept Videos

Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
FISH - Fluorescent In-situ Hybridization02:07

FISH - Fluorescent In-situ Hybridization

Fluorescence in situ hybridization, or FISH, was developed in the early 1980s and has quickly become one of the most widely used techniques in cytogenetics. Labeled probes are used to bind complementary DNA or RNA sequences on a chromosome or in a region within a cell. Earlier, the probes could only be obtained by cloning or reverse transcription of a DNA template. Currently, the probe oligonucleotides can be synthesized synthetically. Additionally, with the advancement of optical techniques,...

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Bacterial Detection & Identification Using Electrochemical Sensors
09:30

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Published on: April 23, 2013

Engineering cell-fluorescent ion track hybrid detectors.

Martin Niklas1, Steffen Greilich, Claudius Melzig

  • 1Division of Medical Physics in Radiation Oncology, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany. m.niklas@dkfz-heidelberg.de

Radiation Oncology (London, England)
|June 14, 2013
PubMed
Summary

We developed a new hybrid detector system (Cell-Fit-HD) that allows simultaneous detection of physical energy deposition and biological responses. This advancement enables high-resolution studies linking cellular behavior to radiation exposure.

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Area of Science:

  • Biophysics
  • Cell Biology
  • Radiation Detection

Background:

  • Limited ability to simultaneously detect physical energy deposition and biological responses due to lack of sensitive, biocompatible particle track detectors.
  • Fluorescent nuclear track detectors (FNTDs) offer 3D ion track information but are limited by diffraction in confocal laser scanning microscopy (CLSM).

Purpose of the Study:

  • To develop next-generation cell-fluorescent ion track hybrid detectors (Cell-Fit-HD) for parallel detection of physical and biological data.
  • To assess the biocompatibility and performance of the Cell-Fit-HD system for co-registering cellular responses with ion track information.

Main Methods:

  • Tested biocompatibility of FNTDs using six cell lines (A549, U87, PC3, A431, VmDk, SMA-560).
  • Evaluated cell adherence, viability, and coverage using different seeding densities and fibronectin coating.
  • Performed carbon irradiation and utilized cell compartment-specific fluorescence stains with CLSM for co-detection.

Main Results:

  • FNTDs demonstrated biocompatibility, with A549 cells forming a uniform, viable monolayer.
  • Cell coating and culturing did not compromise ion track detection capabilities of the FNTD.
  • Standard staining procedures allowed co-registration of cell biology and ion track data.

Conclusions:

  • The Cell-Fit-Hybrid Detector (Cell-Fit-HD) system is a promising platform for high-resolution studies.
  • Enables linking biological responses to energy deposition with advanced optical microscopy.
  • Facilitates multifaceted research in biophysics and radiation biology.