CEBPB and Alzheimer disease: Interestingly, AA, 12-HHTrE, and PGE2 but not LTB4 were selectively elevated in the cortex from both WT and C/EBPβ transgenic mice treated by AD-FMT with the latter much higher than the former (Supplementary Fig. 9C), and we observed similar but slightly different distribution patterns between the serum and feces samples (Supplementary Fig. 9D, E).