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Questions  >>  CBSE XII  >>  Biology
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Defective action of which neurotransmitter of brain leads to Parkinson’s disease?

$\begin{array}{1 1} \text{a. Dopamine} \\ \text{b. Seratonin} \\ \text{c. Noradrenaline} \\ \text{d. Encephalin} \end{array}$

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