title: An energy filter for biological electron microscopy.
mesh_terms: D003090:Coliphages / Q000648:ultrastructure; D004267:DNA Viruses; D004926:Escherichia coli / Q000648:ultrastructure; D005069:Evaluation Studies as Topic; D005374:Filtration; D008099:Liver / Q000648:ultrastructure; D008854:Microscopy, Electron / Q000295:instrumentation* / Q000592:standards; D017955:Poliovirus / Q000648:ultrastructure; D012270:Ribosomes / Q000648:ultrastructure