Microanatomical Study of Embryonic Gonadal Development in Japanese Quail (Coturnix japonica)
Figure 1
Photomicrographs of 3- and 4-day-old quail embryos sectioned during genital ridge formation. (a) The region of the genital ridges (GR) of 3-day-old embryos (AZAN ×40); (b) the genital ridge epithelium (double arrow) (H&E ×400); (c, d) qPGCs-like cells (arrow) located next to the neural tube (NT) (AZAN ×100, ×1000, resp.); (e) the region of the hindgut of 4-day-old embryos showing the genital ridges (GR) and the dorsal mesentery (DM) (H&E ×40); (f) qPGCs (arrows) settled in the genital ridge epithelium (GE) (H&E ×400); (g) the region of the hindgut of 4-day-old embryos showing the genital ridges (GR) and the dorsal mesentery (DM) (AZAN ×40); (h) qPGCs (arrows) settled in the genital ridge epithelium (GE) (AZAN ×400). Note: two layers of the genital ridge epithelium can be obviously seen by Mallory-AZAN stain.
