Overview

This protocol describes a workflow for identifying specific cellular targets within tissue for ultrastructural imaging using light microscopy and scanning electron microscopy (SEM). The method enhances the ability to visualize structures that may be obscured within the original sample volume.

Key Study Components

Area of Science

Cell Biology
Developmental Biology
Neuroscience
Pathology

Background

The technique is based on array tomography, which allows for the slicing of tissue into serial sections.
Originally developed for neuroscience, it can be applied to various biological systems.
Challenges include the difficulty in collecting and maintaining the integrity of serial sections.
Proper preparation and handling are crucial to avoid loss or disarrangement of sections.

Purpose of Study

To provide a detailed imaging workflow for studying cellular and tissue ultrastructure.
To facilitate the identification of target structures within complex biological samples.
To improve imaging resolution and accuracy in various research fields.

Methods Used

Light microscopy for initial target identification.
Serial sectioning of resin-embedded samples.
Preparation of substrates for SEM imaging.
Hierarchical imaging using specific protocols for different imaging resolutions.

Main Results

Successful identification of target cells within tissue sections.
High-resolution imaging of cellular structures achieved through SEM.
Demonstrated effectiveness of array tomography in various biological contexts.
Provided detailed protocols for sample preparation and imaging procedures.

Conclusions

The imaging workflow enhances the ability to study ultrastructural details in tissues.
Array tomography is a versatile technique applicable across multiple biological fields.
Careful execution of the protocol is essential for obtaining reliable imaging results.

Frequently Asked Questions

What is array tomography?

Array tomography is a technique that involves slicing tissue into serial sections to facilitate the identification of target structures for imaging.

What are the main challenges of this protocol?

The main challenges include collecting many serial sections without loss or disarrangement and ensuring proper sample preparation.

How does this method benefit neuroscience research?

This method allows for high-resolution imaging of cellular structures, aiding in the understanding of complex neural tissues.

What types of samples can be used with this technique?

The technique can be applied to various samples, including bacteria, plants, animals, and human tissue samples in pathology.

What imaging resolutions can be achieved?

The protocol allows for high-resolution imaging at various scales, depending on the specific imaging parameters used.

Is prior experience required to use this method?

Yes, individuals new to this method may find it challenging due to the complexity of collecting and handling serial sections.

Institution - Heidelberg Karlsruhe Research Partnership (HEiKA)

Articles Published in JoVE