Expression Analysis of Gnrh1 and Gnrhr1 in Spermatogenic Cells of Rat

Figure 4

Schematic representation of Gnrh1 and Gnrhr1 expression in the germinal epithelium during a complete spermatogenetic cycle (modified from [45]). Columns show the sequence of germ cell generations observed in rat seminiferous tubule at that stage (I–XIV Stages). Spermatogonia: A (type A), In (intermediate), B (type B), R (resting, final DNA replication), and m (mitosis of spermatogonia). Primary spermatocytes: L (leptotene), Z (zygotene), P (pachytene), Di (diakinesis), and II (secondary spermatocytes). Phases 1–19 indicate spermatids differentiation (spermiogenesis). Horizontal lines indicate localization window of Gnrh1 and Gnrhr1, blue line and red dotted line, respectively. Vertical green lines indicate the expression window of Gnrh1 in Sertoli cells.