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Characters of the Alzheimers disease

Write down the features or characters of the Alzheimer’s disease? Explain in short.

E

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a) Progressive memory loss, more in the aged people.

b) Takes place before 50 or prior to 40 years.

c) Atrophy of the cerebral cortex.

d) Genetic mutation: Down syndrome

e) Genes positioned in the chromosome-21.

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