title: Two of a kind.
authors: Lisa
authors: L
authors: Marshall
mesh_terms: D000544:Alzheimer Disease / Q000235:genetics* / Q000473:pathology; D000818:Animals; D002891:Chromosomes, Human, Pair 21; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D009316:National Institutes of Health (U.S.); D058225:Plaque, Amyloid / Q000235:genetics; D014481:United States