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Hela kroppen masspektrometri Imaging av Infrared Matrix-assisterad laserdesorption elektrosprayjonisering (IR-MALDESI)
JoVE Journal
Bioengineering
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JoVE Journal Bioengineering
Whole-body Mass Spectrometry Imaging by Infrared Matrix-assisted Laser Desorption Electrospray Ionization (IR-MALDESI)
DOI:

10:47 min

March 24, 2016

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Chapters

  • 00:05Title
  • 00:57Tissue Preparation
  • 02:46IR-MALDESI Preparation/Calibration
  • 04:09Deposition of Ice Matrix
  • 05:29Mass Spectrometry Imaging Data Acquisition
  • 09:07Results: Spatial Distribution of Lipids in Whole Mouse Preparations
  • 09:52Conclusion

Summary

Automatic Translation

A mass spectrometry imaging (MSI) source operated at atmospheric pressure was developed by coupling mid-infrared laser desorption and electrospray post-ionization. Exogenous ice matrix was used as the energy-absorbing matrix to facilitate resonant desorption of tissue-related material. This manuscript provides a step-by-step protocol for performing IR-MALDESI MSI of whole-body neonatal mouse.

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