Final answer:
Beta-amyloid and tau are proteins associated with Alzheimer's disease.
Step-by-step explanation:
One of the proteins that has offered hope for Alzheimer's is beta-amyloid. Accumulation of beta-amyloid plaques in the brain is one of the main theories for the cause of Alzheimer's disease. These plaques are dense conglomerations of a protein that is not functioning correctly. Another protein associated with Alzheimer's is tau. In Alzheimer's patients, misshapen tau accumulates in neurofibrillary tangles in brain neurons, leading to neuronal dysfunction.