Transmission electron micrograph of section through the macronucleus of Nassula sp containing many darkly staining nucleoli.
TEM taken on 4/1/69 by R. Allen with Philips 300 operating at 60kV. Neg. 7,650X. Bar = 1µm. A print of the negative was scanned and processed in Photoshop. This image is suitable for quantitative analysis. A lower resolution image (CIL:11039) is available in the library for qualitative analysis. Standard glutaraldehyde fixation followed by osmium tetroxide, dehydration in alcohol and embedding in epoxy resin. Microtome section thickness approximately 75nm. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).