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(A) H & E stained sections of the hippocampus in rats treated with normal saline (control), ketamine (toxic), ketamine + conventional formulation PPD suspension, ketamine + nanoformulation PPD-LNC, and PPD-LNC per se. (B) H & E stained sections of cortex in rats treated with normal saline (control), ketamine (toxic), ketamine + PPD suspension, ketamine + PPD-LNC, and PPD-LNC per se.
