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H&E stained. (a) Control group, entorhinal cortex, H&E (×20). (b) Toluene-administered group, entorhinal cortex, H&E (×20). (c) Control group, hippocampal area, H&E (×40). (d) Toluene-receiving group, hippocampal area, H&E (×40). (e) Control group, prefrontal cortex, H&E (×40). (f) Toluene-administered group, prefrontal cortex, H&E (×40).
