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*CIL – Cell Image Library accession number. Please use this to reference an image.

CIL:6228*  Cite 

This study on the zebrafish optic tectum is a series of four images with magnifications ranging from the SEM block face overview to of the zebrafish head to high magnification (80,000X) showing optic tectum synapse. This first image is a bloc face SEM image at 200x of the epon embedded zebrafish head. The second image is another block face SEM low magnification image of the tectum. The third image is a 60,000X TEM image of a OTO fixation and copper lead en bloc staining of zebrafish optic tectum synapse. The fourth image is a 80,000X TEM image of a zebrafish optic tectum synapse. This image larval zebrafish image was collected on a Gatan 3View® serial block face scanning electron microscope (SBFSEM). The 3View® is attached to a FEI Quanta 600 FEG SEM. Block face imaging is a way to look at epon embedded specimens using backscattered electrons in the SEM. A diamond knife in the vacuum chamber of the SEM cuts hundreds of ultrathin serial sections, thus gathering a perfected registered stack of images. Reference for SBFSEM: Denk, W. and H. Horstmann. Serial block face scanning electron microscopy to reconstruct three- dimensional tissue nanostructure. PloS Biology vol 2, 11; e329 doi:10.1371/journal.pbio.0020329 Microwave processing, osmium tetroxoxide/osmid procedure for enhancing membranes, and copper lead en bloc staining. Procedure for specimen preparation available at

Biological Sources
NCBI Organism Classification
Danio rerio
Biological Context
Biological Process
tectobulbar tract morphogenesis
Zebrafish Anatomy
optic tectum
Buchanan, JoAnn (Stanford) (specimen prep)
Genoud, Christel (Gatan) (imaging)
Digital Object Identifier (DOI)
Archival Resource Key (ARK)
Grouping This image is part of a group.
Image Type
recorded image
Image Mode
serial block face SEM (SBFSEM)
Parameters Imaged
electron density
Source of Contrast
differences in adsorption or binding of stain
Visualization Methods
osmium tetroxide
lead salt
copper salt
Processing History
unprocessed raw data
Spatial Axis Image Size Pixel Size
X 750px 0.78µm
Y 709px 0.78µm