This explains that the CDC25A protein in
spermatogonium and Sertoli cells are actively acting cells undergoing mitotic division and CDC25A is a cell cycle regulator of either mitosis or meiosis.
The large nuclei of spermatocytes in the pachytene stage were located in the middle of the seminiferous epithelium, while the nuclei of Sertoli cells, type A spermatogonia, and intermediate
spermatogonium were closer to the basal lamina of the seminiferous tubule.
a-c: Basal compartment showing
spermatogonium (SG), Sustentocytes cell (SC) and normal blood-testis barrier (B).
Electron microscopic observations indicated that the hepatopancreatic cells,
spermatogonium, gill tissues and muscle cells of the crabs with HPND showed severe structural and morphological changes, but microorganisms including bacteria, fungi, microsporidian and viruses were not detected; the healthy crabs were fed/injected with diseased tissues, the symptoms of HPND were not found, suggesting that the diseased crabs with HPND sampled from the farms were not infected by pathogenic organisms.
Spermatogonium, primary spermatocyte, and spermatid cells that demonstrated TUNEL positive staining in preparations, showed the presence of apoptotic cells (Figure 2b).
Experimentally induced diabetic rats show disturbed spermatogenesis, dilated seminiferous tubules, and decreased numbers of
spermatogonium, primary spermatocytes, spermatids, and mature spermatozoa [54].
Relationship between
spermatogonium and testicular development in early chicken embryos.
The process begins with the
spermatogonium, which resides next to the basal lamina of the seminiferous tubules.
The process begins when a type A1
spermatogonium divides to generate two type A2 spermatogonia.