Presenilin 1 hemizygosity has no overt deleterious phenotypic outcomes in sheep: Potential implications for therapeutic targets in Alzheimer's disease. - Mckean NE; Liu J; Rudiger SR; Kelly JM; McLaughlan C; Verma PJ; Hardy J; Gusella JF; Zetterberg H; Reid SJ; Handley RH; Lehnert K; et al. (Neurobiology of aging, 2025)