Particle Morphology and Size as Determined with the Electron Microscope
Plant virus particles can be visualised only in an electron microscope (EM). By utilising beams of electrons and electromagnetic lenses, the EM has a very high resolving power, allowing magnifications of at least X 200,000. Specimens are prepared on a small copper grid, covered with a thin support film of carbon-reinforced Formvar. Electrons pass through the object and hit a fluorescent screen, which is lighted up.
KeywordsVirus Particle Particle Morphology Test Virus Isometric Particle Fluorescent Screen
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