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The activity of acetylcholine esterase – AChE (A) and the level of acetylcholine – ACh (B) in the brain cortex and plasma of rats treated with aluminum oxide nanoparticles (Al2O3-nps), zinc oxide nanoparticles (ZnO-nps), and their combination. Statistical analysis was performed to measure the significant differences with p<0.05 and has been denoted as [*]. The significant differences were compared in the control and the treatment groups.
