Fig6A(left-Female). Copyright: Reprinted with permission from Elsevier from [doi:10.1006/dbio.2000.9741] Dev Biol 223: 181-93, Takasaki N; McIsaac R; Dean J, Gpbox (Psx2), a homeobox gene preferentially expressed in female germ cells at the onset of sexual dimorphism in mice. Copyright 2000