Effects of sex-related factors on expression of GABA-related genes. (A) GABA-related genes exhibiting significant main effects of sex chromosome complement (Vip, Calb1, Gat1, Trkb), gonadal sex (none), and/or circulating testosterone (Calb1). (B) GABA-related genes with significant interactions of sex-related factors. There was a significant interaction of gonadal sex and circulating testosterone on expression of Cst, Calb1, and Bdnf. Numbers at the base of bars indicate N. ***p < 0.001, **p < 0.01, *p < 0.05; T testosterone, B blank, F gonadal female, M gonadal male.