Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Tight junction is the term for a watertight seal between two adjacent animal cells.

A: What is the term for a watertight seal between two adjacent animal cells?
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Q: Compound does the precise pattern of a crystal depend on.

A: What does the precise pattern of a crystal depend on?
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Q: Lymph vessels are like blood vessels, except they move lymph instead of blood.

A:
Lymph vessels are like blood vessels, except they move what instead of blood?
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