MWM (Morris Water Maze) behavioral tests demonstrated that the escape latency for WT mice was significantly increased by AD fecal transplantation compared to HC, whereas it remained comparable among C/EBPβ transgenic mice regardless of AD or HC gut microbiota inoculation (Fig. 2G), suggesting that the learning capability for WT mice was impaired by AD gut microbiota, and neuronal overexpression of C/EBPβ exerts more prominent detrimental effect than AD gut dysbiosis on the learning ability. Here, CEBPB is linked to Alzheimer disease.