A section prepared for examination under electron microscope is___________.

Ultrathin.

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Macerated.

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Thick.

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Of any thickness.

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Solution

The correct option is A Ultrathin.
Ultra thin sections of specimens are cut using a specialized instrument called an "ultramicrotome". The usual thicknesses for transmission electron microscopic examinations range between 20 nm and 150 nm. "Ultra-thin" sections from 50 to 100 nm thick are able to be viewed in the TEM.
Hence the correct answer is (A)

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