Kynurenic acid signaling expands in human and nonhuman primates and impairs dorsolateral prefrontal cortical cognition that is key to mental illness. - Yang S; Datta D; Krienen FM; Woo E; May A; Anderson GM; Galvin VC; Gonzalez-Burgos G; Lewis DA; Ling E; McCarroll SA; Arnsten AF; et al. (Molecular psychiatry, 2026)