Imaging of Neuronal Mitochondria Using a Serial Block-Face Scanning Electron Microscope

0 views • 3:25 min • May 29th, 2025

Loading...
$$\rightleftharpoonup{xx}$$ $$\longleftharp{xx}$$, $$\longrightharp{xx}$$,

Take a trimmed, resin-embedded mouse brain tissue section containing the hippocampus.

The section is stained with heavy metals to enhance contrast under an electron microscope.

Mount the section onto an aluminum pin using cyanoacrylate glue.

Coat the block sides with colloidal silver paste to create a conductive path to the aluminum pin.

Examine the tissue block using a serial block-face scanning electron microscope (SBFSEM).

Within the SBFSEM, the ultramicrotome sequentially slices the block into ultrathin layers while a low-voltage electron beam scans the exposed surface.

A backscattered electron detector captures high-resolution 2D images, revealing mitochondria and surrounding cellular structures.

Using appropriate software, adjust the brightness and contrast to improve image clarity.

Align the sequential images to reconstruct a 3D volume of the brain tissue. This 3D reconstruction allows precise mapping of mitochondrial morphology, spatial distribution, and their relationships within neuronal compartments.

Trim the samples to the area of interest and mount them onto an aluminum pin using gelling cyanoacrylate superglue. Then coat the sample with colloidal silver paste around the sides of the block to provide a conductive path to the aluminum pin. Examine the tissue specimens using a scanning electron microscope system equipped with an in-chamber ultramicrotome stage and a low kilovolt backscattered electron detector.

Image the samples with these settings. Begin analysis by selecting image type, then 8-bit to convert the images to 8-bit TIFF format from the original proprietary 16-bit. If automatic contrast and/or brightness conversion during this step is not ideal for images, reopen the 16-bit images and press image. Adjust brightness contrast.

Select a range that works for all images and press Apply. Then perform the conversion. If there was unacceptable image movement between slices, align the image stacks by selecting Plug-ins, Registration and linear stack alignment with SIFT and set the alignment for translation only mode rather than rigid body.

Enlarge the Canvas size prior to registration by selecting image adjust Canvas size. Alternatively, reduce the image to an area of interest by selecting the desired region and then cropping it. If necessary, scale images to a smaller, more manageable size using image j, then selecting image and scale.

09:09

Targeted Studies Using Serial Block Face and Focused Ion Beam Scan Electron Microscopy

Related Videos

0 Views

09:21

Mitochondria and Endoplasmic Reticulum Imaging by Correlative Light and Volume Electron Microscopy

Related Videos

0 Views

09:21

Serial Block-Face Scanning Electron Microscopy (SBF-SEM) of Biological Tissue Samples

Related Videos

0 Views

08:57

Focussed Ion Beam Milling and Scanning Electron Microscopy of Brain Tissue

Related Videos

0 Views

04:50

Neuromodulation and Mitochondrial Transport: Live Imaging in Hippocampal Neurons over Long Durations

Related Videos

0 Views

01:21

Focused Ion Beam Scanning Electron Microscopy for 3D Reconstruction of Synaptically Linked Neurons

Related Videos

0 Views

04:11

Confocal Imaging of Mitochondrial Movement within Oligodendrocytes in Organotypic Brain Slice Cultures

Related Videos

0 Views

07:47

Analysis of Brain Mitochondria Using Serial Block-Face Scanning Electron Microscopy

Related Videos

0 Views

11:16

Serial Block-Face Scanning Electron Microscopy (SBEM) for the Study of Dendritic Spines

Related Videos

0 Views

08:46

A Three-Dimensional Technique for the Visualization of Mitochondrial Ultrastructural Changes in Pancreatic Cancer Cells

Related Videos

0 Views

Last updated: 18 July 2026