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⟩ Which of the following statements about Transmission Electron Microscopy is not true. A) The specimen must be stained with osmium or other heavy metal. B) The specimens are placed in a high vacuum for viewing. C) The specimens must be sliced very thin, 20-100 nm in thickness. D) The beam is focused by electromagnetic lenses

A) The specimen must be stained with osmium or other heavy metal.

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