A histotechnologist is reviewing the stained slides. She notices that several of the slides have tissue fragments and incomplete sections of skin. What is/are the possible source(s) or cause(s) of these "missing" areas? Consider all steps of processing and select the most accurate answer.

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Please select the single best answer

	Improper embedding. Tissue is not completely flat and in contact with the base of mold.
	Rough facing (trimming) or cutting is too shallow, which does not fully reveal the entire tissue.
	Under-processing tissue will cause it to fall off the slide during staining or it will "explode" on the floatation bath.
	All of the above are possible sources.