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Conjugation, a key component of phase II biotransformation reactions, is a vital process in drug detoxification. It involves transferring endogenous substances like glucuronic acid, sulfate, and glycine to drugs or their metabolites formed in phase I reactions. These conjugation reactions, often catalyzed by specific enzymes, transform potentially harmful metabolites into inactive, water-soluble forms easily excreted in urine or bile. By enhancing polarity and eliminating pharmacological...
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Phase II biotransformations are detoxification mechanisms that conjugate xenobiotics with endogenous substances, neutralizing their toxicity.
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Enhancement of fluorescence emission difference microscopy using conjugated vortex phase modulation.

D Zhu1, W Liu1, Z Zhang1

  • 1State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China.

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|October 20, 2018
PubMed
Summary
This summary is machine-generated.

We introduce conjugated fluorescence emission difference (cFED) microscopy to enhance image quality by precisely matching excitation spot sizes and intensities, reducing artefacts and information loss for superresolution biomedical imaging.

Keywords:
Confocal microscopyfluorescence microscopyscanning microscopy

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Area of Science:

  • Microscopy
  • Optical Imaging
  • Biomedical Research

Background:

  • Regular fluorescence emission difference (FED) microscopy uses distinct excitation beams for improved resolution.
  • Artefacts and information loss occur in FED due to mismatched excitation spot sizes and intensities.
  • Vortex phase masks are used to generate doughnut beams in FED.

Purpose of the Study:

  • To propose and demonstrate an improved FED method for enhanced image quality.
  • To address artefacts and information loss in FED imaging.
  • To enable reliable superresolution observations in biomedical studies.

Main Methods:

  • Developed conjugated fluorescence emission difference (cFED) microscopy.
  • Employed programmable phase modulation for image enhancement.
  • Utilized a conjugated vortex phase mask to match excitation spot size and intensity.

Main Results:

  • cFED microscopy significantly reduces artefacts and information loss compared to regular FED.
  • Experimental tests on nanobeads and cells validate the method's performance.
  • Achieved improved image quality for superresolution imaging.

Conclusions:

  • The proposed cFED method offers superior image quality for superresolution microscopy.
  • This technique can advance biomedical imaging and analysis.
  • cFED provides a reliable approach for observing biological samples at high resolution.