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Related Experiment Video

Updated: May 29, 2025

Preparation of the Rat Vocal Fold for Neuromuscular Analyses
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Comparative Three-Dimensional Fine Structures of the Rabbit Vocal Fold Using Correlative Light and Electron

Kiminobu Sato1, Mengya Mark1, Xiaochuan Xu1

  • 1Department of Speech, Language and Hearing Sciences, Doisy College of Health Sciences, Saint Louis University, St. Louis, Missouri, U.S.A.

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|February 6, 2025
PubMed
Summary
This summary is machine-generated.

Rabbit vocal folds (VF) lack macula flava and vocal ligament but share fibrous components with human VF. Correlative light and electron microscopy (CLEM) revealed distinct cellular structures, aiding comparative research.

Keywords:
comparative fine structurescorrelative light and electron microscopyrabbit vocal fold

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Area of Science:

  • Comparative anatomy
  • Microscopy techniques
  • Vocalization research

Background:

  • Understanding vocal fold (VF) structure is crucial for vocalization research and animal modeling.
  • Previous studies have primarily focused on human VF anatomy, with limited comparative data from animal models.

Purpose of the Study:

  • To investigate the comparative fine structures of rabbit vocal folds (VF) using correlative light and electron microscopy (CLEM) and transmission electron microscopy (TEM).
  • To elucidate the functional mechanisms and structural differences between rabbit and human VF.

Main Methods:

  • Examination of seven normal New Zealand White Rabbit vocal folds.
  • Application of CLEM and TEM techniques to analyze VF fine structures.

Main Results:

  • Rabbit VF lacked macula flava and vocal ligament, unlike human VF.
  • Fibrous component distribution in the lamina propria (LP) was similar to humans.
  • CLEM identified spindle-shaped and oval-shaped cells in the rabbit VF LP.
  • Amorphous materials were observed originating from fibroblast vesicles.
  • Stellate cells with lipid droplets, present in human macula flava, were absent in rabbit VF.

Conclusions:

  • The CLEM technique is valuable for observing fine structures in animal models, facilitating comparative studies.
  • Rabbits possess suitable VF fibrous components for animal experiments, but researchers must acknowledge species-specific structural differences.
  • CLEM is expected to be widely applied in future animal experiments for evaluating VF fine structures across small species.