Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: A electron microscope is used to see extremely small objects.

Answer: What type of microscope is used to see extremely small objects?


Question: The thalamus helps to regulate consciousness, arousal, and sleep states.

Answer: What helps to regulate consciousness, arousal, and sleep states?


Question: A mitotic spindle forms from the centrosomes.

Answer:
A mitotic spindle forms from the what?