Judged: two independent readers; copy check clear.
beta-amyloid
beta-amyloid Beta-amyloid is a peptide made from a larger precursor protein.
Beta-amyloid is a peptide made from a larger precursor protein. In its fibrillar amyloid form, it is the main material in the plaques seen in Alzheimer’s disease and in older people with Down syndrome, and it is found mostly in the nervous system though it has also been reported in other tissues.