Epididymal epithelial cells

These are the columnar epithelial cells lining the epididymis, a coiled tube where sperm mature and are stored. They create a unique luminal microenvironment by secreting and absorbing fluids, ions, and proteins. They are involved in sperm concentration, protection, and acquisition of motility and fertilizing capacity. The epithelium includes principal cells (for absorption/secretion) and basal cells (stem/progenitor cells).