Microanatomical Study of Embryonic Gonadal Development in Japanese Quail (Coturnix japonica)
Figure 3
Photomicrographs of 6- and 8-day-old quail embryos sectioned during gonadal differentiation. (a) Six-day-old left and right indifferent gonads (LG, RG) are situated at the medioventral part of the mesonephroi (MS) (H&E ×40); (b) germ cells (arrows) were found in the germinal epithelium of indifferent gonads (H&E ×1000); (c) 8-day-old left and right embryonic testes (LT, RT) are situated at the medioventral part of the mesonephroi (MS) (H&E ×40); (d) male germ cells (arrows) were found in the medulla (H&E ×1000); (e) 8-day-old left and right embryonic ovaries (LO, RO) are situated at the medioventral part of the mesonephroi (MS) (H&E ×40); (f) female germ cells (arrows) were found in the cortex (H&E ×1000). Note: thick cortex (C) and asymmetrical gonads were observed in female embryos.
