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10. Under the microscope

Alzheimer’s Disease and the Brain

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Scientists can also see the terrible effects of Alzheimer’s disease when they look at brain tissue under the microscope:

  • Alzheimer tissue has many fewer nerve cells and synapses than a healthy brain.
  • Plaques, abnormal clusters of protein fragments, build up between nerve cells.

Scientists are not absolutely sure what causes cell death and tissue loss in the Alzheimer brain, but plaques and tangles are prime suspects.

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