Parkinson's disease is characterized by clumps of abnormal brain proteins called Lewy bodies of which a-synuclein (a-syn) protein is the principal component.

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The peptide enhances production of keratin, a protein that is a major component of hair, according to Symrise.

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But it is also an important component of the protein factories themselves.

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AN-1792 was a vaccine that immunized patients against a protein called beta amyloid, which is the main component of the plaques that destroy the brain in Alzheimer's disease.

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