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Some studies report that the majority of people with the brain changes of Alzheimer's disease also have the brain changes of a second cause of dementia on autopsy

Chau Y-Y, Bandiera R, Serrels A, Martnez-Estrada OM, Qing W, Lee M, et al

Mater Interfaces 15 (21), 2511025121

Braun TP, Orwoll B, Zhu X, Levasseur PR, Szumowski M, Nguyen ML, et al
Many peptide serums: Use very low peptide concentrations
