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Improvement in cortex and hippocampus of APP/PS1 mice by Tieguanyin extracts. H&E (A) and Nissl (B) staining of cortex and hippocampus (CA1, CA3 and DG) of wild-type (NC), APP/PS1 (MC) and Tieguanyin-treated APP/PS1 (Tgy-Q, Tgy-N, Tgy-C) mice (×400 magnification).
