Fig. 2.

GC-MS total ion chromatograms (TIC) of hippocampus samples and jejunum samples. A The detected metabolites in the hippocampal samples can be called the typical total ion chromatogram (TIC) of the hippocampus (n = 8). In hippocampus samples, 144 endogenous metabolites were identified as changed significantly, including amino acids, glucose, amides, pyrimidines, and fatty acids. B In jejunum samples, 190 endogenous metabolites were identified as changed significantly, including amino acids, amino alcohol derivatives, fatty acid, and pyrimidines