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

CIL:36111*  Cite 

Longitudinal and cross sections showing ribbon like myofibrils regularly alternating with layers of mitochondria and SR/T tubules. Dyads are located in a grove of the mitochondrial surface. Negatives aere scanned on nikon 8000 at 4000dpi/6.3 micron scan step size, then reduced in size 4X for upload, for an effective pixel size of 25 micron. Technical details: Heads and tail removed, thorax bisected and immersed in 3% glutaraldehyde buffered in 0.1 M cacodylate buffer (pH7.2). Stored at 4C for several days. Muscle dissected out. Rinsed 3Xin buffer, postfixed in 2% PsO4 in buffer, for 1.5 hrs; rinsed 3 times in water, en-block stained in saturated aqueous uranyl acetate, embedded in Spurr. Thin sections stained in uranyl acetate and lead and examined in a Philips 410 Microscope. Reference for the image: Loesser, K.E., Castellani, L. and Franzini-Armstrong, C. Disposition of junctional feet in muscles of invertebrates. J. Muscle Research Cell Motility 13:161-173, 199

Biological Sources
NCBI Organism Classification
Cell Type
flight muscle cell
Cellular Component
sarcoplasmic reticulum
Clara Franzini-Armstrong
Kathryn Loesser
Digital Object Identifier (DOI)
Archival Resource Key (ARK)
Grouping This image is part of a group.
Image Type
transmission electron microscopy (TEM)
Image Mode
transmission electron microscopy (TEM)
Parameters Imaged
electron density
Source of Contrast
differences in adsorption or binding of stain
Visualization Methods
uranyl salt
lead salt
Processing History
digitized negative film
Data Qualifiers
raw, unprocessed data
suitable for spatial measurements
Spatial Axis Image Size Pixel Size
X 2500px ——
Y 3298px ——