Original question.
Describe and sketch from microscopical examination the object marked B.
TODO: The microscopic object B and its image are absent; its specific description and sketch cannot be supplied.
The description and sketch of B remain undetermined. An actual microscopy would record the preparation, magnification, structural arrangement and the distinguishing features observed. A drawing would show those observed relationships with a stated scale or magnification; a generic diagram cannot substitute for the absent object.
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