Monkey DiseasesDuodenoscopyCrohn DiseaseAlzheimer DiseaseAmyloid beta-PeptidesMacaca mulattaHaplorhiniAmyloid beta-Protein Precursortau ProteinsNeurofibrillary TanglesBrainPlaque, AmyloidSaimiriMacacaApolipoprotein E4NeurofibrilsCebusDementiaAmyloid Precursor Protein SecretasesPresenilin-1AmyloidCognition DisordersNeuropsychological TestsAtrophyDementia, VascularNeuronsCebidaeApolipoproteins EPeptide FragmentsMild Cognitive ImpairmentAgingAotus trivirgatusMacaca radiataCercopithecusCognitionCercopithecidaePresenilin-2HippocampusMagnetic Resonance ImagingDisease Models, AnimalCerebral CortexMacaca nemestrinaAotidaeMental Status ScheduleAspartic Acid EndopeptidasesLewy Body DiseaseCholinesterase InhibitorsMice, TransgenicAge of OnsetMemantineCallithrixBrain ChemistryErythrocebus patasPresenilinsTemporal LobeAniline CompoundsMemory DisordersMolecular Sequence DataCercopithecus aethiopsCerebral Amyloid AngiopathyNerve DegenerationSubstantia InnominataNational Institute on Aging (U.S.)PlatyrrhiniAutopsyPositron-Emission TomographyLongitudinal StudiesBehavior, AnimalProtease NexinsMemory