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Related Concept Videos

MALDI-TOF Mass Spectrometry01:19

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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
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Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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Related Experiment Video

Updated: Mar 30, 2026

Expanding the Comprehension of the Tumor Microenvironment using Mass Spectrometry Imaging of Formalin-Fixed and Paraffin-Embedded Tissue Samples
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[Imaging Mass Spectrometry in Histopathologic Analysis].

Fumiyoshi Yamazaki, Mitsutoshi Seto

    Rinsho Byori. the Japanese Journal of Clinical Pathology
    |November 6, 2015
    PubMed
    Summary
    This summary is machine-generated.

    Matrix-assisted laser desorption/ionization (MALDI)-imaging mass spectrometry (IMS) visualizes biomolecule distribution in tissues. This technique identifies known and novel molecules, offering insights difficult to obtain with traditional methods.

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    Area of Science:

    • Biochemistry
    • Analytical Chemistry
    • Microscopy

    Context:

    • Matrix-assisted laser desorption/ionization (MALDI)-imaging mass spectrometry (IMS) integrates mass spectrometry and microscopy.
    • IMS provides spatial distribution data for biomolecules within biological samples.
    • Conventional methods like counter-staining and immunohistochemistry have limitations in visualizing certain molecules.

    Purpose:

    • To review the principles and recent advances in MALDI-IMS.
    • To present findings on the application of IMS in biological and pathological samples.
    • To discuss the limitations and clinical applications of IMS, including drug development.

    Summary:

    • MALDI-IMS visualizes the spatial distribution of diverse biomolecules by combining biochemical and positional information.
    • The technique enables the identification of both targeted and novel molecules based on mass-to-charge ratio.
    • IMS generates unique data on lipid and small molecule distribution in tissues, surpassing conventional visualization methods.

    Impact:

    • Provides a powerful tool for visualizing biomolecule distribution in tissues.
    • Facilitates the discovery of novel molecules and understanding of their spatial organization.
    • Offers potential applications in pathology and drug development for enhanced diagnostic and therapeutic strategies.