Effects of morphine self-administration on brain structure and microglial phenotypic diversity in the absence of neuronal loss in male Wistar rats - Ana Débora Elizarrarás-Herrera; David Medina-Sánchez; Mariana Stefania Serrano-Ramírez; Diego Angeles-Valdez; Luis A. Trujillo-Villarreal; María Antonieta Carbajo-Mata; César J. Carranza-Aguilar; Eduardo A. Garza-Villarreal (Psychopharmacology, 2026)