The effect of clavulanic acid on the development of tolerance and dependence induced by morphine in mice: role of DRD2 and NR1 genes, oxidative stress, and GDNF protein. - Esmaili-Shahzade-Ali-Akbari P; Alani B; Hosseini ES; Banafshe HR; Ardjmand A; Nooshabadi MR; Haghparast A; Ghaderi A (Naunyn-Schmiedeberg's archives of pharmacology, 2026)