Sertoli cells

Sertoli cells are the "nurse" or sustentacular cells within the seminiferous tubules of the testes. They create the blood-testis barrier, provide structural and nutritional support to developing sperm cells (spermatogenesis), phagocytose residual bodies, and secrete fluid, androgen-binding protein (ABP), and hormones like inhibin and anti-Müllerian hormone (AMH). They are essential for male fertility.