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Related Concept Videos

Fixation and Sectioning01:03

Fixation and Sectioning

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Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
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Updated: May 23, 2025

Rigid Embedding of Fixed and Stained, Whole, Millimeter-Scale Specimens for Section-free 3D Histology by Micro-Computed Tomography
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Histo-LOOP: A Novel Embedding Tool for Standardizing, Simplifying, and Advancing Histological Tissue Preparation.

Pakhwan Nilcham1, Mamdouh Afify1, Nicole Schaaps1

  • 1Department of Cardiology, Angiology, and Internal Intensive Medicine, University Hospital RWTH Aachen, Aachen, Germany

The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society
|March 29, 2025
PubMed
Summary

A new Histo-LOOP embedding tool simplifies histological processing for challenging tissues like long luminal samples. This novel tool ensures accurate tissue preparation for research and diagnostics, improving standardization and reducing workload.

Keywords:
histological assessmenthistological techniquespecimen preparationtissue handlingtissue processing

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Area of Science:

  • Histology and Pathology
  • Biomedical Engineering
  • Materials Science

Background:

  • Standardized tissue preparation is vital for accurate histological research and diagnostics.
  • Long luminal tissues present unique challenges for conventional embedding methods.
  • Existing techniques risk section misalignment, material waste, and high workload.

Purpose of the Study:

  • Introduce the Histo-LOOP embedding tool, a novel solution for histological processing.
  • Standardize and simplify the preparation of challenging tissue types, including long luminal tissues.
  • Improve the histological evaluation of various samples, such as tubular tissues and multiple biopsies.

Main Methods:

  • Development of the Histo-LOOP embedding tool.
  • Application of Histo-LOOP for preparing long tubular tissues.
  • Utilizing Histo-LOOP for embedding multiple small tissue samples (e.g., punch biopsies).

Main Results:

  • Histo-LOOP enables complete cross-sectional and longitudinal views of tubular tissues.
  • The tool facilitates assessment of multiple biopsies or sections within a single paraffin block.
  • Histo-LOOP is compatible with standard sectioning and staining, producing no artifacts.

Conclusions:

  • The Histo-LOOP embedding tool offers a standardized and simplified approach to histological processing.
  • It effectively addresses challenges in preparing long luminal tissues and small biopsies.
  • This novel tool enhances the accuracy and efficiency of histological evaluations.