Harrison DE, Strong R, Reifsnyder P, Kumar N, Fernandez E, Flurkey K, Javors MA, Lopez‐Cruzan M, Macchiarini F, Nelson JF, Markewych A, Bitto A, Sindler AL, Cortopassi G, Kavanagh K, Leng L, Bucala R, Rosenthal N, Salmon A, Stearns TM, Bogue M, Miller RA. 17‐a‐estradiol late in life extends lifespan in aging UM‐HET3 male mice; nicotinamide riboside and three other drugs do not affect lifespan in either sex. Aging Cell 2021, 20: e13328. PMID: 33788371, PMCID: PMC8135004, DOI: 10.1111/acel.13328.Peer-Reviewed Original Research