Often abbreviated as A-beta, this is a protein that builds up in the brain of persons with alzheimer’s disease, collecting in clumps called senile plaques. Some researchers question whether beta-amyloid is the cause of the dementia, but most agree that it is involved in the disruption of thinking that is a hallmark of the disease.
A wax like protein formed from amyloid precursor protein in nerve cells which aggregates in Alzheimer’s disease to form plaques.