title: Polytropic montage: ribosomes examined in a tissue section.
abstract: Electron micrographs of a variably titled specimen can be blended by computer to form an image of any selected specimen plane. Thus, one can examine a tissue section layer by layer with an effective depth of focus less than 30 A. Ribosomes so observed in rat liver have some resemblances to isolated, tungsten-shadowed particles.
mesh_terms: D000818:Animals; D003201:Computers; D004926:Escherichia coli / Q000166:cytology; D006046:Gold; D006652:Histological Techniques; D008099:Liver / Q000166:cytology; D008722:Methods; D008854:Microscopy, Electron; D051381:Rats; D012270:Ribosomes / Q000032:analysis*; D014414:Tungsten
chemical_list: D006046:Gold; D014414:Tungsten