Journal: bioRxiv
Article Title: The influence of axonal beading and undulation on axonal diameter mapping
doi: 10.1101/2023.04.19.537494
Figure Lengend Snippet: (a) Non-lesional brain tissue (purple) was obtained from the left middle temporal gyrus (red) of a 45-year-old female undergoing surgery for hippocampal sclerosis, drop-fixed in glutaraldehyde/paraformaldehyde fixative, stained with osmium tetroxide, and embedded in resin . The tissue was subsequently scanned with a high-resolution multi-beam scanning electron microscope. (b) The 200×200×112 μ m 3 subset of the EM volume corresponding to subcortical white matter (green rectangle in the right panel of (a)) was segmented using 2d and 3d U-Nets. (c) The segmented intra-axonal space of myelinated axons longer than 33.5 μ m were aligned along the z-axis, resulting in 76 axons ranging from 33.5 to 189.3 μ m long. The figure (a) is adapted from with permission from bioRxiv.
Article Snippet: The tissue sample was trimmed to 2×3×0.2 mm 3 and scanned with a multi-beam serial-section scanning electron microscope (Sigma, Carl Zeiss) in 4×4 nm 2 pixels and 33 nm slice thickness.
Techniques: Staining, Microscopy