Notably, 42 of the 241 lipid species in the hippocampus that were changed after PTSD treatment, such as Cer(d18:0+pO/24:0+O)+HCOO, PC(34:1)+H, and PS(20:4/22:6)-H, were normalized after EA treatment (see Supplementary Table S5 for details), suggesting that changes in these lipid species may be related to the biological effects of EA. The gene discussed is CBLN1; the disease is post-traumatic stress disorder.