This is a C. elegans embryo
(surrounded by other embryos) at the 2-cell stage (the two big gray spots are its two nuclei
). The magnification is about 5,000X. Click on the image to view its bigger image (~ 900K).
(TEM Flash movie, 550K, movie length: 16″)
TEM images by Jay Campbell, Laboratory for Optical and Computational Instrumentation (LOCI).