. . . . . . . "[Amyloid beta peptide (beta A4) accumulates as plaques in the brains of individuals with Alzheimer's disease and Down's syndrome, and may contribute to the cognitive decline that is a feature of these diseases. beta A4 is a normal product of cell metabolism, derived from the amyloid precursor protein (APP), but the biological functions of these molecules are not fully known.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2017-02-19"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2017-10-17T13:10:39+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .