EPHX2 and major depressive disorder: Interestingly, fecal microbiota transplantation from CSDS-susceptible mice with depression-like phenotype produced such a phenotype in antibiotic-treated Ephx2 KO mice, indicating that the administration of “depression-related microbes” can contribute to the conversion of resilient Ephx2 KO mice into KO mice with depression-like phenotype [51].