High-Resolution Histology for Craniofacial Studies on Zebrafish and Other Teleost Models

Area of Science:

• Cell Biology
• Histology
• Microscopy

Background:

• Current cell and tissue identification heavily relies on fluorescent tags or marker gene expression in molecular biology.
• There is a need to revive traditional histological techniques to complement modern molecular approaches.
• Microanatomy and histology skills are essential for a comprehensive understanding of biological systems.

Purpose of the Study:

• To present a protocol for embedding, sectioning, and staining semithin plastic sections.
• To encourage researchers to integrate microanatomy and histology with molecular studies.
• To highlight the utility of traditional methods in investigating gene function and biological processes.

Main Methods:

• A protocol for embedding, sectioning, and staining semithin plastic sections is detailed.
• The method is designed to be easy-to-use and inexpensive.
• Applicable to various biological materials including wild type, morphants, mutants, transgenic, and pharmacologically treated samples.

Main Results:

• The protocol yields high-resolution images in transmitted and polarized light.
• It allows for simultaneous utilization with transmission electron microscopy.
• The method is versatile and applicable to a wide range of sample types.

Conclusions:

• Reviving skills in microanatomy and histology is crucial for scientific advancement.
• This protocol offers a valuable, low-cost method to enhance the interpretation of molecular biology findings.
• Integrating histological data provides a more complete understanding of gene function and biological mechanisms.