Abnormal levels of may lead to schizophrenia and parkinson’s disease.

Dopamine is a neurotransmitter chemical which is released by the neurons of the brain for transfer of information from cell to cell. It regulates the movement and emotional responses in the human body. The abnormal levels of dopamine can be responsible for the neurological diseases.

The decrease of dopamine liberation from the substantia nigra of the brain can lead to Parkinson's disease whereas the excess release may lead to over-sensitivity of the dopamine receptors and can be responsible for the disease schizophrenia.

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firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.