At Least Some Cases of Parkinson's Disease Are Apparently Linked

question 94

Multiple Choice

At least some cases of Parkinson's disease are apparently linked to what cause?

• A) A recessive gene on chromosome 4
• B) The accumulation of aluminum in the cerebral cortex and hypothalamus
• C) A chronic lack of vitamin B-1
• D) A toxic substance found in a heroin substitute

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