A high resolution image of the extensive layer of cortical microtubules which lie under the pellicle and many other microtubules and mitochondria that form a mass in the cytosol. Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. TEM taken on 7/24/67 by R. Allen with Philips 200 operating at 60kV. Neg. 12,400X. The raw negative was scanned with an Epson Perfection V750 Pro. This image is best used for quantitative analysis. Additional information is available at (http://www5.pbrc.hawaii.edu/allen/).